Brandon Williamson

Brandon Williamson

28-Year-Old PitcherSP
Cincinnati Reds
2026 Fantasy Outlook
There was no outlook written for Brandon Williamson in 2026. Check out the latest news below for more on his current fantasy value.
RANKS
Rest of Season From Preseason
#372
ADP
Signed a one-year, $800,000 contract with the Reds in March of 2026.
Takes loss in bulk-relief role
PCincinnati Reds
September 7, 2026
Williamson (3-4) allowed six runs (three earned) on three hits, five walks and a hit batsman while striking out four over 4.1 innings to take the loss versus the Dodgers on Monday.
Analysis
Williamson has been tabbed to handle a piggyback role with ace Chase Burns as the Reds focus on managing Burns' workload late in the season. Williamson wasn't good in this tough matchup, with a three-run home run by Teoscar Hernandez in the sixth inning accounting for most of the damage. For the season, Williamson is at a 5.97 ERA, 1.67 WHIP and 28:27 K:BB through 37.2 innings. While working in bulk relief theoretically gives the southpaw a better chance at wins, the Reds have three of their last five series of the year coming against division-leading teams. Burns and Williamson are projected to work in tandem again over the weekend in Milwaukee.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2023
2020
2026 MLB Game Log
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2025 MLB Game Log
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2024 MLB Game Log
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2023 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
86
Last 10 Games
86
Last 5 Games
82
How many pitches does Brandon Williamson 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 Brandon Williamson 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 2024
 
 
-3%
BAA vs LHP
2026
 
 
-35%
BAA vs LHP
2025
No Stats
2024
 
 
-68%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .234 57 13 6 11 2 0 4
Since 2024vs Right .241 177 27 26 35 5 1 6
2026vs Left .184 45 11 5 7 2 0 2
2026vs Right .282 130 17 22 29 4 1 4
2025vs Left 0 0 0 0 0 0 0 0
2025vs Right 0 0 0 0 0 0 0 0
2024vs Left .444 12 2 1 4 0 0 2
2024vs Right .143 47 10 4 6 1 0 2
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2024
 
 
-61%
ERA on Road
2026
 
 
-54%
ERA on Road
2025
No Stats
2024
 
 
-76%
ERA on Road
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 8.31 1.94 21.2 1 2 0 8.7 6.6 2.9
Since 2024Away 3.26 1.19 30.1 2 2 0 5.6 4.7 0.9
2026Home 8.47 2.00 17.0 1 2 0 7.9 7.4 2.1
2026Away 3.92 1.40 20.2 2 2 0 5.7 5.7 0.9
2025Home 0 0 0 0 0 0 0 0 0
2025Away 0 0 0 0 0 0 0 0 0
2024Home 7.71 1.71 4.2 0 0 0 11.6 3.9 5.8
2024Away 1.86 0.72 9.2 0 0 0 5.6 2.8 0.9
More Splits View More Split Stats
Stat Review
How does Brandon Williamson 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
1.04
 
K/9
6.7
 
BB/9
6.5
 
HR/9
1.4
 
Fastball
92.8 mph
 
ERA
5.97
 
WHIP
1.67
 
BABIP
.277
 
GB/FB
1.00
 
Left On Base
64.1%
 
Exit Velocity
81.7 mph
 
Barrels/BBE
6.2%
 
Spin Rate
2274 rpm
 
Balls Hit 95+ MPH
28.4%
 
Swinging Strike
10.5%
 
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Brandon Williamson See More
Recent RotoWire Articles Featuring Brandon Williamson See More
Past Fantasy Outlooks
2024
2023
2022
Williamson looked worn out down the stretch in 2023, which was probably predictable given that it was his first big-league season. An early-September stint on the COVID IL may have also been a critical tipping point. Prior to the diagnosis, the 25-year-old left-hander held a 4.20 ERA and 87 strikeouts through 98.2 innings and was sitting 94-95 mph with his fastball. Following his return to the Reds' active roster, he gave up 12 earned runs and an .858 opponents' OPS across his final four starts covering 18.2 innings, with his fastball velocity dropping into the 91-92 mph range. Williamson will have to compete for an Opening Day rotation spot this spring and aim to rediscover the form that saw him register a 3.15 ERA and 58:16 K:BB in 60 innings (11 starts) between July and August last year. He should be on watch lists either way.
Williamson was one of the key pieces acquired by the Reds from the Mariners in the Jesse Winker/Eugenio Suarez trade. The former second-round pick was coming off a dominant 2021 season in the minors which concluded at the Double-A level, setting himself up to be part of the Reds' 2022 rotation at some point. It didn't happen, though, as the left-hander showed regression across the board both in terms of numbers and stuff. His lack of control was particularly alarming, as he went from an 8.1 percent walk rate in 2021 to a 13.9 percent walk rate in 2022. Williamson was added to the 40-man roster over the offseason, and there should be starts available to him for the Reds if he can bounce back. Fantasy managers should take more of a wait-and-see approach, though.
While Williamson's fastball may not seem elite from a velocity standpoint (93 mph average, touches 97), it is a perfect pitch in every other sense. He is a 6-foot-6 lefty, so the pitch plays up just via extension and handedness, but it's the induced vertical break that makes the pitch such a monster. His fastball got whiffs at a 37% clip and was thrown for strikes at a 69% clip, rates that are up there with the best pitchers in the minors. Williamson also boasts one of the best curveballs in the minors, although that pitch is thrown in the mid-70s, so it lacks the velocity of the breaking balls that typically play as 70-grade pitches in the majors. His changeup and slider are average offerings. Williamson logged a 37.4 K% and an 8.1 BB% in 98.1 innings across High-A and Double-A. He has passed Emerson Hancock in the pecking order, and is right there with George Kirby and Matt Brash as one of Seattle's future rotation anchors. Williamson is not on the 40-man roster, but he could still make a handful of starts in the majors later this summer.
More Fantasy News
Hangs on for third win
PCincinnati Reds
September 3, 2026
Williamson (3-3) picked up the win Wednesday, giving up three runs on seven hits and two walks over 5.1 innings in a 7-3 victory over the Padres. He struck out five.
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Reinstated from 60-day injured list
PCincinnati Reds
September 1, 2026
The Reds activated Williamson (shoulder) from the 60-day injured list Tuesday.
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Spot start on tap Wednesday
PCincinnati Reds
Shoulder
August 31, 2026
Reds manager Terry Francona said that Williamson (shoulder) will be activated from the 60-day injured list to start Wednesday's game against the Padres in Cincinnati, Charlie Goldsmith of Fox 19 Now Cincinnati reports.
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Slated for another rehab start
PCincinnati Reds
Shoulder
August 25, 2026
Williamson (shoulder) will make his next rehab appearance Thursday for Triple-A Louisville, MLB.com reports.
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Completes fifth rehab start
PCincinnati Reds
Shoulder
August 23, 2026
Williamson (shoulder) allowed one run on four hits and four walks while striking out five over four innings in a rehab start for Triple-A Louisville on Saturday.
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Latest Fantasy Rumors
Will be added to 40-man
PCincinnati Reds
November 13, 2022
Williamson will join Cincinnati's 40-man roster by Tuesday, reports Bobby Nightengale of The Cincinnati Enquirer.
Analysis
Williamson spent time at both Double-A Chattanooga and Triple-A Louisville in 2022, posting a 4.11 ERA, 1.56 WHIP and 1.60 K/BB in 122.2 combined innings. It was a dramatic dip in production from his 2021 production when he was a member of the Mariners' organization. Moving him to the 40-man roster will protect him from being selected in December's Rule 5 Draft.
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