Jack Flaherty

Jack Flaherty

26-Year-Old PitcherSP
St. Louis Cardinals
2022 Fantasy Outlook
Flaherty was supposed to be the anchor to the Cardinals' rotation, yet two separate injuries limited his season to fewer than 80 innings. He began the season extremely well, going 8-1 in his first 11 starts with a 2.90 ERA and 1.03 WHIP while striking out 26% of the batters he faced. He hit the IL for the first time at the end of May after straining his oblique while (unnecessarily) batting, and did not return to the mound until mid-August when he made three more starts before leaving in the last of those three starts with a right shoulder strain. Flaherty came back late in the season to work in relief, but there is no way to sugarcoat how disappointing the season was after such a terrific start. That disappointment carries over into 2022, as a small tear in Flaherty's right shoulder will sideline him for the start of the season. He received a PRP injection and is shut down from throwing for two weeks, but it's unclear exactly how much time he'll actually miss. Flaherty was expected to be a high-risk/high-reward pitching option for fantasy managers, and that risk is now even higher as his injury issues continue in 2022. Read Past Outlooks
RANKSFrom Preseason
#143
ADP
$Signed a one-year, $5 million contract with the Cardinals in March of 2022.
Earns first win Thursday
PSt. Louis Cardinals
September 22, 2022
Flaherty (1-1) picked up the victory Thursday in San Diego, striking out nine in six innings while allowing three runs (two earned) on four hits and four walks.
ANALYSIS
In St. Louis' 141st game of the season, Flaherty finally picked up his first victory. It was his first time pitching more than five innings in a game this year, and his nine punchouts were a season high. In four starts since returning from a shoulder injury, he's compiled a 4.29 ERA, 1.57 WHIP and 20:11 K:BB in 21 innings. His next start will likely be in the middle of next week in Milwaukee.
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Pitching Stats
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2022
2021
2020
2019
2018
2017
2022 MLB Game Log
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2021 MLB Game Log
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2020 MLB Game Log
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2019 MLB Game Log
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2018 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
78
Last 10 Games
78
Last 5 Games
83
How many pitches does Jack Flaherty generally throw?
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
What part of the game does Jack Flaherty generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2020
 
 
-3%
BAA vs RHP
2022
 
 
-15%
BAA vs RHP
2021
 
 
-4%
BAA vs LHP
2020
 
 
-2%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2020vs Left .219 326 76 28 63 12 2 11
Since 2020vs Right .213 295 82 31 54 9 0 10
2022vs Left .281 75 13 8 18 3 2 3
2022vs Right .240 64 13 12 12 3 0 1
2021vs Left .195 167 39 15 29 6 0 4
2021vs Right .204 155 46 11 28 5 0 8
2020vs Left .213 84 24 5 16 3 0 4
2020vs Right .209 76 23 8 14 1 0 1
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2020
 
 
-39%
ERA at Home
2022
 
 
-6%
ERA on Road
2021
 
 
-31%
ERA at Home
2020
 
 
-72%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2020Home 3.04 1.06 77.0 7 3 0 9.1 2.9 1.1
Since 2020Away 4.97 1.42 70.2 7 3 0 10.4 4.7 1.7
2022Home 4.80 1.60 15.0 0 1 0 9.6 4.2 0.0
2022Away 4.50 1.86 14.0 1 0 0 6.4 8.4 2.6
2021Home 2.57 0.91 35.0 4 1 0 9.5 2.6 1.5
2021Away 3.74 1.18 43.1 5 1 0 10.0 3.3 1.2
2020Home 2.67 0.96 27.0 3 1 0 8.3 2.7 1.0
2020Away 9.45 1.73 13.1 1 2 0 16.2 5.4 2.0
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Stat Review
How does Jack Flaherty compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
1.30
 
K/9
8.1
 
BB/9
6.2
 
HR/9
1.2
 
Fastball
93.1 mph
 
ERA
4.66
 
WHIP
1.72
 
BABIP
.318
 
GB/FB
1.44
 
Left On Base
74.3%
 
Exit Velocity
80.8 mph
 
Barrels/BBE
3.1%
 
Spin Rate
2334 rpm
 
Balls Hit 95+ MPH
24.6%
 
Swinging Strike
9.7%
 
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Jack Flaherty
Weekly Pitcher Rankings: And Then There Was One
2 days ago
Robbie Ray tops Todd Zola's weekly pitcher rankings thanks to a pair of home matchups against a pair of struggling opponents.
Weekly Pitcher Rankings: Cease Tops a Busy Week
9 days ago
Two-start pitchers fill eight of the top nine spots in Todd Zola's weekly pitcher rankings, but Jacob deGrom earns a spot near the top despite being scheduled for just one start.
Weekly Pitcher Rankings: Patience is a Virtue
16 days ago
Todd Zola ranks this week's starting pitchers, with the widely-available Bailey Falter's two-start week earning him a top-30 spot.
FanDuel MLB: Saturday Targets
16 days ago
Chris Bennett notes that Saturday looks like a decent spot to deploy Jose Ramirez as he might be overlooked amongst a slew of other top bats.
DraftKings MLB: Saturday Breakdown
16 days ago
With Kohei Arihara really struggling at home, Chris Morgan is offering up a few Blue Jays bats.
Past Fantasy Outlooks
2021
2020
2019
2018
2017
2016
2015
The small samples that come with a 60-game season were always going to lead to some disappointing years from top players. Flaherty was most certainly among that group. The large number of doubleheaders the Cardinals were forced to play due to their COVID-related shutdown meant the young right-hander was able to make just nine starts, and he struggled to a disappointing 4.91 ERA in those outings. There are plenty of reasons not to be too worried about his future. His strikeout rate dropped slightly from 29.9% to 28.8%, his walk rate rose from 7.1% to 9.4% and his groundball rate increased from 39.5% to 42.6% -- these are all marginal differences, suggesting he was essentially the same pitcher in terms of skills. One awful start can completely tank a player's ERA in such a short season, and Flaherty's would sit at a much-better 3.13 if not for a nine-run blowup against the Brewers in mid-September.
While 2018 was the breakout for Flaherty's delicious slider, 2019 was the breakout season for Flaherty as a pitcher. That seems silly to say when we look back at the midpoint of the season and find Flaherty 4-5 with a 4.90 ERA in his first 17 starts, but it was. At that time, Flaherty was getting the strikeouts, but 1.9 homers per nine innings limited his success. Flaherty changed his tune over his final 16 starts, going 7-3 with a 0.93 ERA and allowing six homers over his final 106.1 innings of work. He was simply masterful down the stretch for the Cardinals, holding opponents to a .139 batting average over those 16 starts. The real Flaherty lies somewhere in between those two groupings of stats. It is worth noting he has thrown over 400 innings the past two seasons, including 213.1 IP in 2019 when you include postseason work. That, plus the slider usage, is something to consider before going all-in.
The year didn't end on a positive note, with Flaherty posting a 5.34 ERA in September, but the overall body of work was stellar, especially for a 22-year-old taking his first real spin through the major leagues. Flaherty's fastball/slider combo is already one of the best in the game, and he can also change speeds although the changeup was a clear fourth offering behind the heater, slider and curve. He used that arsenal to strike batters out at a 29.6% clip, which was a top-10 mark among all pitchers with at least 150 innings. He shot himself in the foot occasionally with walks (3.5 BB/9) and homers (1.19 HR/9), but even marginal improvement to his 57.2% first-pitch strike rate should help on both fronts, and he's proven durable so far in his young professional career. With a rotation spot secured on what looks like a contending club, Flaherty should be viewed as a solid SP2 in mixed leagues.
Once seen as a likely No. 4 or No. 5 starter, the projectable 6-foot-4 righty finally delivered on the promise evaluators had long envisioned, with his fastball velocity jumping from the low-90s to the mid-90s in 2017. Exceptional command allowed him to profile as a back-end starter when he had middling stuff, and now that command allows him to project as a No. 3 starter. In addition to an improved fastball, Flaherty's slider also took a step forward, now profiling as his second-best offering. His curveball is more of a show-me pitch and his changeup is still developing, but has a chance to be a quality third pitch. Flaherty will not strike out a batter per inning, but should eventually be an asset in ERA and WHIP, and is ready to approach 200 innings. He got a brief taste of the majors last season, and will compete for a rotation spot this spring. One way or another, he figures to spend the bulk of 2018 in the big-league rotation, and makes for a decent flier at the end of deep-league drafts.
The 21-year-old Flaherty may not have the upside of some of the other pitchers in the St. Louis organization, but he achieved a good deal of success at High-A in 2016. The former first-round pick posted a 126:45 K:BB in 134 innings at that level. His fastball sits in the low-90s and is certainly not overpowering, but it does have a lot of movement. His changeup is above average, and Flaherty also features an emerging curveball and slider. In addition, Flaherty possesses an ideal frame at 6-foot-4, 205 pounds that should hold up to the rigors of being a rotation workhorse. Flaherty has the upside of a No. 2 starter and will begin the 2017 campaign at Double-A working to improve his secondary offerings.
Despite missing almost two months with a back injury at the start of the season, Flaherty managed to pass his first test pitching in a full-season league with flying colors. The 6-foot-4 righty posted a 2.84 ERA (2.83 FIP) with a 1.29 WHIP and 97 strikeouts in 95 innings with Low-A Peoria. He probably should have been challenged with a late-season promotion to the Florida State League, as his four-pitch mix was more than enough to dominate Low-A hitters. Flaherty will get his chance with High-A Palm Beach to start his age-20 season, but this may not be a one level per year arm, as the Cardinals might want to see how he fares in the upper levels at some point in 2016. A first-round pick in 2014, Flaherty has three pitches that could reach plus status, giving him a No. 2 ceiling, with the realistic floor of a No. 4 starter.
The Cardinals took Flaherty in the first round of the 2014 draft, inking the 6-foot-4 righty with a bonus well over the slot value for the No. 34 pick. He's several years away from contributing at the big league level but the Cardinals spent a lot to keep him from going to North Carolina for college. He was able to get in six starts in the Gulf Coast League for the Cardinals, posting an impressive 1.59 ERA and 28 strikeouts in just 22.2 innings as an 18-year-old. He could take some big steps forward in 2015, his first full year where his focus will be entirely on pitching, and if he can finish the season in High-A for the Cardinals it will be a great sign of things to come.
More Fantasy News
Tough start versus Reds
PSt. Louis Cardinals
September 17, 2022
Flaherty allowed four runs on six hits, two walks and two hit batsmen while striking out five over five innings versus the Reds on Friday. He did not factor in the decision.
ANALYSIS
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No-decision versus Pirates
PSt. Louis Cardinals
September 10, 2022
Flaherty allowed three runs on six hits and four walks while failing to record a strikeout in five innings in a no-decision versus the Pirates on Saturday.
ANALYSIS
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Takes tough-luck loss
PSt. Louis Cardinals
September 5, 2022
Flaherty (0-1) allowed one run on six hits and a walk over five innings Monday, striking out six and taking a loss against Washington.
ANALYSIS
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Activated ahead of start
PSt. Louis Cardinals
September 5, 2022
The Cardinals reinstated Flaherty (shoulder) from the 60-day injured list ahead of his scheduled start Monday against the Nationals, Katie Woo of The Athletic reports.
ANALYSIS
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Monday return confirmed
PSt. Louis Cardinals
Shoulder
September 2, 2022
Flaherty (shoulder) will be activated off the injured list to start Monday against the Nationals, Jeff Jones of the Belleville News-Democrat reports.
ANALYSIS
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