Michael Kopech

Michael Kopech

29-Year-Old PitcherRP
 Free Agent  
Free Agent
Out
Injury Knee
Est. Return 4/13/2026
2026 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
W-L
ERA
WHIP
K
SV
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2026 Fantasy Outlook
Kopech continues to tweak his pitch mix, most recently eliminating the slider he tossed nearly a quarter of the time in past seasons. Similarly, he previously eliminated a curveball and sinker from his repertoire. In 2025, he predominantly threw his upper-90's fastball 83 percent of the time while using a cutter as his secondary offering. Unfortunately, Kopech's durability continues to be a red flag in his profile - a shoulder injury and a torn meniscus limited him to just 14 appearances (11.0 innings) with the Dodgers in 2025. The 29-year-old issued more walks (13) than strikeouts (12), but his upside remains, especially since his K/9 has jumped from 9.0 as a starter to 12.1 as a full-time reliever, while also producing better ratios. Read Past Outlooks
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RANKS
Rest of Season
From Preseason
#387
ADP
Bats R
Throws R
40 Man No
Height 6'3"
Weight 195
DOB 4/30/1996
Drafted 1st Rd 2014
Signed a one-year, $5.2 million contract with the Dodgers in January of 2025.
Placed on injured list
PLos Angeles Dodgers  
Knee
September 19, 2025
The Dodgers placed Kopech on the 15-day injured list Friday with right knee inflammation.
Analysis
Renewed inflammation in Kopech's knee will force him back onto the injured list, putting an early end to what was an injury-filled 2025 campaign. Manager Dave Roberts said Friday that the Dodgers will aim to "reset" the 29-year-old while he's on the IL, per Jack Harris of the Los Angeles Times, and the team is optimistic that he'll return sometime during the postseason. In the meantime, Will Klein will come up from Triple-A Oklahoma City to fill the open spot in Los Angeles' bullpen.
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Left/Right Pitching Splits
Since 2024
 
 
-41%
BAA vs LHP
2026
No Stats
2025
 
 
-100%
BAA vs LHP
2024
 
 
-32%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .134 163 60 24 18 2 0 4
Since 2024vs Right .229 169 40 23 32 2 0 5
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .000 22 5 6 0 0 0 0
2025vs Right .250 31 7 7 6 0 0 0
2024vs Left .153 141 55 18 18 2 0 4
2024vs Right .224 138 33 16 26 2 0 5
Home/Away Pitching Splits
Since 2024
 
 
-33%
ERA at Home
2026
No Stats
2025
 
 
-23%
ERA at Home
2024
 
 
-36%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 2.72 1.16 43.0 2 3 10 10.7 5.2 1.0
Since 2024Away 4.04 1.32 35.2 4 5 5 12.4 5.6 1.0
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 2.08 1.85 4.1 0 0 0 12.5 12.5 0.0
2025Away 2.70 1.65 6.2 0 0 0 8.1 9.5 0.0
2024Home 2.79 1.09 38.2 2 3 10 10.5 4.4 1.2
2024Away 4.34 1.24 29.0 4 5 5 13.3 4.7 1.2
Prospect Rankings History
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Past Fantasy Outlooks
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
Kopech changed his approach in 2024 as part of a full-time move to relief. Pitching in shorter stints, the 28-year-old added velocity on his fastball that he threw 98.5 mph on average - a +3.5 mph difference from 2023. He also increased the usage of the pitch, tossing it a career-high 78 percent of the time. This yielded excellent results, as hitters had trouble squaring up on the four-seamer; its 34 percent whiff rate among the highest in the league for that pitch type. As for Kopech's secondary arsenal, he eliminated his changeup and curveball in favor of a cutter. Overall, he struck out 88 across 67.2 innings between the White Sox and Dodgers while also receiving save chances for both clubs. Walks are still an issue, but Kopech improved his control after the trade to L.A. (3.8 BB/9 compared to 4.9 prior). Kopech racked up 15 saves, 10 holds and six wins last season and appeared to be the favorite for the closer job to begin 2025, but the Dodgers' signing of Tanner Scott should limited Kopech for more of a setup role.
Kopech took a major step back in 2023 with a 5.43 ERA, 1.59 WHIP and 15.4 percent walk rate in 129 innings. He started in 27 of his 30 outings but was out of the rotation by early September, and his season ended a week early for knee surgery. The right-hander had a decent first half with a 4.08 ERA, but even at his best it was often a challenge to get through five innings due to the walk issues. Kopech seems likely to get another shot as a starter heading into 2024, but with the lingering durability concerns and control problems, there's no guarantee he'll receive that opportunity. Fantasy managers could do worse for a late-round flier, but he's mostly an upside play with a low floor.
Kopech returned to a big-league mound in 2021 for the first time in three years and excelled as a reliever, and he continued that success in the starting rotation last year. The right-hander made only 19 starts while he dealt with knee and shoulder issues, but when available he pitched well with a 3.54 ERA, 1.19 WHIP and 105:57 K:BB across 119.1 innings. He unsurprisingly saw his velocity drop 2.5 mph from his year out of the bullpen, and with it his strikeout rate dropped from 36.1 percent to 21.3 percent. The underlying numbers are a bit less encouraging, as he had a 4.83 xFIP and .223 BABIP, which could indicate he's due for some regression. Kopech continues to rely heavily on his fastball and slider and may not be able to take that next step until he's able to mix in an effective third pitch more often, which has eluded him to this point.
Kopech was a giant unknown heading into the 2021 season. When last we saw him, he left his final start after his promotion from the minors with an injury in 2018 which required Tommy John surgery to fix. He missed the 2019 season rehabbing, and opted out of the 2020 season due to health concerns. He came into 2021 as a reliever, something he had never done as a professional, and absolutely flourished in the role from a real baseball perspective. His success did not exactly translate into much fantasy success outside of his strikeout total, but he quickly reminded us what his right arm is capable of doing when it is healthy. Now the question will be: can he transition back to the rotation? If so, what will it look like? An effective third pitch has thus far eluded him, and that challenge along with the jump in workload may just make him a risk you let others take.
Kopech threw one clean five-pitch inning last spring during Cactus League play, which marks his lone game action in over two years. He needed Tommy John surgery in September 2018 after a brief cup of coffee and opted out of the 2020 season due to the pandemic. He will be 30 months removed from TJS this spring. New pitching coach Ethan Katz said in December that Kopech is feeling great and the team expects him to compete for a rotation spot in camp. Kopech's arm should be healthy and fresh, but considering he has been unable to build up his workload, the White Sox will probably have to devise a creative way of managing him this season. Kopech has an 80-grade fastball, plus slider, improving changeup and shaky control. He is the type of pitching prospect who could dominate any team over six innings or get chased by any team before making it out of the third inning.
Since 2000, of six starting pitchers who had their first Tommy John surgery in September, as Kopech did in 2018, the average innings pitched in the season that began 18 months later was 101.2. Two of the six (Mike Hampton, Scott Mathieson) did not make it back at all during what should have been their comeback years. Kopech has an 80-grade fourseam fastball with elite spin and will flash a plus slider and plus changeup. However, his command and control are fringe-average at best. Considering command is often the last thing to return for pitchers coming off TJS, we should not panic if he is wild in spring training or even the first couple months of the season. He is undeniably a flyball pitcher, so home runs will sometimes follow his walks and hit batsmen. This is not the year to expect quality ratios, but there will be a lot of strikeouts if he is lucky enough to avoid setbacks when he starts to ramp up.
Chicago's tantalizing fireballer grinded his way to a late-season MLB debut, battling control issues at Triple-A for much of the season. The excitement was short lived, as he required Tommy John surgery in mid-September. Kopech gave up a run on 11 hits and one walk while hitting five batters and striking out nine over 11 innings in his first three MLB starts (two were cut short by rain). He was pummeled in his final start, which also included a rain delay before he tore his UCL. There is a lot of noise in his tiny MLB sample -- elbow issues resulted in his velocity ticking down in each successive start and only one was unaffected by rain -- but in his debut outing his 96.8 mph four-seamer averaged 2,629 rpm -- Justin Verlander led qualified starters at 2,618 rpm. He also flashed a plus slider and plus changeup. Kopech will miss all of 2019 and with a normal recovery he will be fully healthy for spring training in 2020 -- 17-plus months removed from the surgery.
Last year Kopech's doubters thought he would end up as a high-leverage reliever, but now he seems more likely to wind up on the cover of GQ than in a big-league bullpen. There are reasonable arguments for a couple other hurlers (Forrest Whitley and Alex Reyes), but Kopech will be ranked by most as the top pitching prospect in the game this offseason. In addition to his famed 80-grade fastball, which he can dial up to triple digits with ease, Kopech made massive strides with his slider and changeup. Both secondaries now project as plus offerings, and with improving command, a future No. 1 starter is coming into focus. The White Sox kept him at Double-A for most of 2017, but rewarded his improvement with a three-start run at Triple-A to close out the year. He will return to Charlotte, but he should spend the bulk of 2018 in the big-league rotation. His immediate floor is a high-strikeout ratio risk, but if he throws enough strikes, he could be an SP2 on a per-start basis.
Kopech made headlines in 2016, both bad and good. The bad was breaking his hand in spring training while getting into an altercation with a teammate, delaying his start to the season until July. Between this incident and missing 50 games of development in 2015 due to testing positive for a banned substance, there were some makeup questions dogging him. Once the 6-foot-3 right-hander started pitching, the good headlines started. His calling card is an overpowering fastball that touches triple digits. He breezed through Carolina League hitters, striking out 82 in 52 innings (14.2 K/9) and was clearly one of the top prospects in the Arizona Fall League. It is easy to see why the White Sox insisted Kopech be part of the deal for Chris Sale. Commanding the heater (5.0 BB/9 in 2016) in addition to improving the secondary offerings and building up innings (134.2 in three seasons) make up his to-do list for 2017.
Kopech is one of Boston’s better pitching prospects at the lower levels of the organization, projecting as a No. 2 starter if it all clicks for him. He was given a challenging assignment to Low-A Greenville to start the season and was successful at that level, finishing 4-5 with a 2.63 ERA while striking out 70 in 65 innings. The bad news is that Kopech was suspended 50 games for testing positive for Oxilofrine, a stimulant in violation of the Minor League Drug Prevention and Treatment Program. The suspension wiped out the rest of his regular season, leaving him only an option of working out at team’s training facility in Fort Myers. He was able to work on a few things there, in particular his off-speed stuff and ironing out his mechanics. Kopech participated in the Fall Instructional League, making up for some lost development time. His major areas of focus in 2016 are repeating his delivery, commanding his fastball and refining the secondary stuff. He’ll likely open at Greenville.
Kopech was the second of Boston's two first-round picks in the 2014 draft. Coming out of high school, he was immediately assigned to the Gulf Coast League, where he held opponents to a measly .216 average and .255 slugging percentage. His problems with control and command were evident -- nine walks in 13.2 innings -- but his mid-90s heater (touching 97-98 mph) was effective against other rookies. Kopech has a lot of moving parts to his delivery, but has already worked to correct some of that. His secondary pitches are works in progress, but his raw stuff gives him a high ceiling if it can be harnessed. The Red Sox may challenge him at Low-A Greenville in 2015 for his first full-season assignment.
More Fantasy News
IL stint likely
PLos Angeles Dodgers  
Undisclosed
September 19, 2025
Kopech is tending to uncertain physical issues which are expected to require a stint on the injured list, Bill Plunkett of The Orange County Register reports.
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Back from 60-day IL
PLos Angeles Dodgers  
September 1, 2025
The Dodgers activated Kopech (knee) from the 60-day injured list Monday.
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Return set for next week
PLos Angeles Dodgers  
Knee
August 28, 2025
Kopech (knee) is expected to be activated off the injured list during the Dodgers' next road trip, which begins Tuesday in Pittsburgh, per MLB.com.
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Shaky so far in rehab stint
PLos Angeles Dodgers  
Knee
August 18, 2025
Kopech (knee) has tossed two rehab outings with Triple-A Oklahoma City, allowing three runs on three hits and three walks while striking out three batters over 1.2 combined innings.
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Beginning assignment Thursday
PLos Angeles Dodgers  
Knee
August 13, 2025
Kopech (knee) will begin a rehab assignment at Triple-A Oklahoma City on Thursday, Fabian Ardaya of The Athletic reports.
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Latest Fantasy Rumors
Giants have touched base
PFree Agent  
December 10, 2025
The Giants "have been in touch" with Kopech, Susan Slusser of the San Francisco Chronicle reports.
Analysis
It's not clear whether the discussions have advanced beyond the preliminary stage. Kopech was limited to only 14 appearances in 2025 due to shoulder and knee issues, posting a 2.45 ERA and 12:13 K:BB across 11 innings with the Dodgers. The 29-year-old ended the season on the injured list with right knee inflammation after having surgery earlier in the year to repair a torn meniscus in the same knee. If healthy, Kopech would represent a low-cost, high-upside proposition.
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