Jack Flaherty

Jack Flaherty

26-Year-Old PitcherSP
St. Louis Cardinals
2021 Fantasy Outlook
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. Read Past Outlooks
RANKSFrom Preseason
#34
ADP
$Signed a one-year, $3.9 million contract with the Cardinals in February of 2021.
Pitches out of bullpen
PSt. Louis Cardinals
September 29, 2021
Flaherty allowed one hit and one walk with one strikeout through a scoreless inning of work in Wednesday's 4-0 loss to the Brewers.
ANALYSIS
For just the second time in his career, Flaherty made an appearance out of the bullpen Wednesday. The right-hander gave up a double to Lorenzo Cain and a walk to Jackie Bradley but did not allow a run. The Cardinals would love to have the 2019 version of Flaherty available to start a playoff game or two, but the oblique and shoulder injuries that the 25-year-old has suffered this season leave his role undetermined as St. Louis eyes up an October run.
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Pitching Stats
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2021
2020
2019
2018
2017
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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2017 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
80
Last 10 Games
65
Last 5 Games
38
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 2019
 
 
-5%
BAA vs RHP
2021
 
 
-4%
BAA vs LHP
2020
 
 
-2%
BAA vs RHP
2019
 
 
-10%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2019vs Left .201 639 160 50 117 21 0 22
Since 2019vs Right .191 615 203 44 105 18 1 20
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
2019vs Left .202 388 97 30 72 12 0 14
2019vs Right .182 384 134 25 63 12 1 11
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2019
 
 
-36%
ERA at Home
2021
 
 
-31%
ERA at Home
2020
 
 
-72%
ERA at Home
2019
 
 
-24%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2019Home 2.46 0.85 160.2 14 6 0 10.0 2.1 1.2
Since 2019Away 3.85 1.21 154.1 10 7 0 10.8 3.4 1.2
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
2019Home 2.37 0.79 98.2 7 4 0 10.7 1.8 1.2
2019Away 3.13 1.15 97.2 4 4 0 10.5 3.2 1.1
More Splits View More Split Stats
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
3.27
 
K/9
9.8
 
BB/9
3.0
 
HR/9
1.4
 
Fastball
93.3 mph
 
ERA
3.22
 
WHIP
1.06
 
BABIP
.249
 
GB/FB
1.16
 
Left On Base
72.5%
 
Exit Velocity
82.3 mph
 
Barrels/BBE
5.5%
 
Spin Rate
2283 rpm
 
Balls Hit 95+ MPH
24.1%
 
Swinging Strike
12.1%
 
Prospect Rankings History
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Defensive Stats
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Recent RotoWire Articles Featuring Jack Flaherty
NL FAAB Factor: Waiver Pickups of the Week
23 days ago
Jan Levine concludes his column for the season with a look at some late contributors and a few to keep in mind for 2022.
Weekly Pitcher Rankings: Saving the Best For Last
24 days ago
Todd Zola ranks the starting pitching for the final weekend of the season, as Zack Wheeler has two more chances to embellish his Cy Young resume.
NL FAAB Factor: Waiver Pickups of the Week
37 days ago
Among his list of candidates, Jan Levine profiles a number of recent injury returnees who should be able to immediately help you out.
Fantasy Baseball Injury Report: Pollock Suffers Hamstring Strain
42 days ago
Jeff Stotts cautions injury management will be challenging over the final days of the season, with the hamstring strain suffered by AJ Pollock potentially having a large impact with its limited time to heal.
NL FAAB Factor: Waiver Pickups of the Week
51 days ago
A certain Cubs outfielder has been hot of late and Jan Levine urges you to get him while you can.
Past Fantasy Outlooks
2020
2019
2018
2017
2016
2015
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
Available out of bullpen
PSt. Louis Cardinals
September 28, 2021
Manager Mike Shildt said that Flaherty will be available out of the bullpen during Tuesday's game against the Brewers, Zachary Silver of MLB.com reports.
ANALYSIS
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Gets just one out
PSt. Louis Cardinals
September 25, 2021
Flaherty allowed two runs on two hits and a walk while striking out a batter over a third of an inning Friday against the Cubs. He did not factor into the decision.
ANALYSIS
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Activated prior to start
PSt. Louis Cardinals
September 24, 2021
Flaherty (shoulder) was reinstated from the 10-day injured list Friday.
ANALYSIS
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Set to start Friday
PSt. Louis Cardinals
Shoulder
September 22, 2021
Flaherty (shoulder) will start Game 2 of Friday's doubleheader against the Cubs, Jeff Jones of the Belleville News-Democrat reports.
ANALYSIS
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Could return Friday
PSt. Louis Cardinals
Shoulder
September 21, 2021
Flaherty (shoulder) could be used in an opener role during one half of Friday's doubleheader against the Cubs, Derrick Goold of the St. Louis Post-Dispatch reports.
ANALYSIS
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