Trent Thornton

Trent Thornton

31-Year-Old PitcherRP
Seattle Mariners
2025 Fantasy Outlook
There was no outlook written for Trent Thornton in 2025. Check out the latest news below for more on his current fantasy value.
$Signed a $1.2 million contract with the Mariners in January of 2024.
Impressive for fourth win
PSeattle Mariners
September 9, 2024
Thornton (4-3) got the win against the Cardinals on Sunday, firing two scoreless innings during which he allowed a hit and recorded two strikeouts.
ANALYSIS
Thornton played a pivotal role in the Mariners' pitching plans Sunday, providing two nearly perfect innings following an earlier-than-expected call from the bullpen due to Luis Castillo's exit as a result of a hamstring strain. Thornton threw 28 pitches over his two frames and produced his 10th scoreless appearance in his last 11 outings, lowering his ERA under 4.00 (3.99) in the process. Thornton's versatility has been leveraged frequently this season, as he's logged a career-high 64 appearances that have helped him to a career-best nine holds and his most wins since he was primarily a starter for the Blue Jays in his rookie 2019 campaign.
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Pitching Stats
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2024
2023
2022
2021
2020
2019
2024 MLB Game Log
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2023 MLB Game Log
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2022 MLB Game Log
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2021 MLB Game Log
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2020 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
16
Last 10 Games
16
Last 5 Games
14
How many pitches does Trent Thornton 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 Trent Thornton 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 2022
 
 
-18%
BAA vs RHP
2024
 
 
-17%
BAA vs RHP
2023
 
 
-32%
BAA vs RHP
2022
 
 
-6%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2022vs Left .268 260 58 21 63 16 1 7
Since 2022vs Right .220 348 82 21 70 13 0 13
2024vs Left .262 133 38 8 32 10 1 3
2024vs Right .217 161 39 11 31 6 0 5
2023vs Left .308 55 7 3 16 4 0 3
2023vs Right .209 70 19 3 14 3 0 2
2022vs Left .246 72 13 10 15 2 0 1
2022vs Right .231 117 24 7 25 4 0 6
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2022
 
 
-34%
ERA on Road
2024
 
 
-7%
ERA at Home
2023
 
 
-41%
ERA on Road
2022
 
 
-74%
ERA on Road
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2022Home 4.08 1.22 79.1 4 6 0 8.6 2.5 1.4
Since 2022Away 2.69 1.11 70.1 1 1 1 8.2 2.6 1.0
2024Home 3.47 1.02 36.1 3 2 0 9.7 2.0 1.0
2024Away 3.75 1.25 36.0 1 1 1 9.5 2.8 1.0
2023Home 2.41 1.23 18.2 1 2 0 8.2 1.9 1.4
2023Away 1.42 1.03 12.2 0 0 0 6.4 1.4 1.4
2022Home 6.29 1.52 24.1 0 2 0 7.4 3.7 1.8
2022Away 1.66 0.92 21.2 0 0 0 7.1 2.9 0.8
More Splits View More Split Stats
Stat Review
How does Trent Thornton compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 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 30 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
4.05
 
K/9
9.6
 
BB/9
2.4
 
HR/9
1.0
 
Fastball
95.3 mph
 
ERA
3.61
 
WHIP
1.13
 
BABIP
.302
 
GB/FB
1.07
 
Left On Base
70.6%
 
Exit Velocity
80.6 mph
 
Barrels/BBE
5.8%
 
Spin Rate
2756 rpm
 
Balls Hit 95+ MPH
22.3%
 
Swinging Strike
12.3%
 
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 Trent Thornton See More
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Past Fantasy Outlooks
2021
2020
Thornton was feared to have required Tommy John surgery, but he only needed surgery to remove loose bodies in his right elbow at the beginning of September. As a result, he should be ready for the start of the 2021 campaign. The right-hander battled elbow issues over most of the season in 2020, and he only made three starts as a result. Thornton's production was skewed by a limited sample, but he still improved to a 2.66 FIP, although his 5.22 SIERA left something to be desired. He showed promise during his rookie season in 2019, but it's not yet clear how he'll perform after surgery. Thornton has a five-pitch arsenal, but he has a middling 92.2 mph average fastball velocity, and his strikeout rate hasn't jumped off the page. The 27-year-old demonstrated some effectiveness over his first two years in the majors, but he hasn't done enough to warrant a roster spot in most fantasy leagues to begin 2021.
Thornton unexpectedly emerged as Toronto's most reliable starter in his rookie campaign, tying for the team lead with six wins while pacing the squad in starts (29), innings (154.1) and strikeouts (149). Although his 4.59 FIP was far from spectacular, he finished the season on a positive note, registering a 2.19 ERA over 24.2 innings in September. Thornton doesn't throw exceptionally hard and registered a modest 22.0 K% last season, but he ranks as one of the baseball's top pitchers at generating a high spin rate, particularly on his slider and curveball. The right-hander probably won't evolve into a true staff ace, but he could grow into a solid middle-of-the-rotation pitcher if he can improve his walk rate (8.9%) and do a better job of limiting home runs (1.4 HR/9). Thornton is likely to open 2020 in Toronto's starting rotation, but he hasn't yet earned a roster spot in most fantasy leagues.
More Fantasy News
Saddled with loss Tuesday
PSeattle Mariners
September 4, 2024
Thornton (3-3) took the loss against the Athletics on Tuesday, allowing an earned run on two hits and a walk over one-third of an inning. He struck out one.
ANALYSIS
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Picks up first save
PSeattle Mariners
June 27, 2024
Thornton recorded the first save of his MLB career in a win over the Rays on Wednesday, firing a perfect ninth inning.
ANALYSIS
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Snags third win Wednesday
PSeattle Mariners
June 13, 2024
Thornton (3-1) got the win over the White Sox on Wednesday, firing a scoreless ninth inning during which he recorded a strikeout.
ANALYSIS
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Gets second win Tuesday
PSeattle Mariners
June 12, 2024
Thornton (2-1) got the win against the White Sox on Tuesday, firing 1.2 scoreless innings while recording two strikeouts.
ANALYSIS
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Takes loss Sunday
PSeattle Mariners
April 29, 2024
Thornton (0-1) took the loss against the Diamondbacks on Sunday, allowing an earned run on a hit and a walk over one inning.
ANALYSIS
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Latest Fantasy Rumors
Favorite for starting role
PToronto Blue Jays
February 23, 2020
Thornton is the favorite to be named the fifth starter in the Blue Jays' rotation to begin the season, Scott Mitchell of TSN.ca reports.
ANALYSIS
Thornton surprisingly emerged to pitch the most innings for the big-league team in 2019. However, the club added a number of arms this offseason and also has multiple prospects who are close to major-league ready. That said, even if Thornton manages to earn a starting role out of camp, he'll need to perform well to maintain it.
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