Seunghwan Oh
Seunghwan Oh
37-Year-Old PitcherRP
 Free Agent  Foreign
Free Agent
Out
Injury Elbow
Est. Return 5/15/2020
2019 Fantasy Outlook
A rough 2017 season had Oh's stock trending downward heading into 2018, but he proved the doubters wrong by quietly producing a strong campaign. After signing with the Blue Jays in the offseason, "The Final Boss" rewarded them with a 2.68 ERA, 1.00 WHIP and 55:10 K:BB in 47 innings. This strong showing made him a somewhat hot commodity when the trade deadline came around, and he wound up getting dealt to the Rockies. Despite the hitter-friendly environment, he fared well in his new digs. Oh actually had a lower ERA with Colorado (2.53) than he did with Toronto, and maintained a strong 24:7 K:BB in 21.1 frames. There was talk of Oh possibly returning to South Korea in 2019, but the Rockies are expecting him back to help set up for closer Wade Davis. Davis will have a long leash and Oh's strikeout numbers aren't gaudy enough to elevate him into the ranks of elite setup men. Read Past Outlooks
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$Signed a one-year, $2 million contract with the Blue Jays in February of 2018. Traded to the Rockies in July of 2018. Triggered $2.5 million team option for 2019. Released by the Rockies in July of 2019.
Continuing career in Korea
PFree Agent  F
Elbow
August 6, 2019
Oh (elbow) agreed to a one-year contract Wednesday with the Samsung Lions of the Korea Baseball Organization on a deal worth approximately $490,000, Jeeho Yoo of the Yonhap News Agency reports.
ANALYSIS
On the heels of a four-season stint in MLB, Oh will return overseas after the Rockies released him July 28. He'll miss the remainder of the KBO season while recovering from elbow surgery, but Oh is expected to re-sign with the Lions over the winter and return to action at some point in May. While he's on the mend, Oh will be able to serve a 72-game suspension he received for a prior gambling-related conviction in Korea. Oh turned 37 years old in July and seems unlikely to resurface in North America at this stage of his career.
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Pitching Stats
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Left/Right Pitching Splits
Since 2017
 
 
-29%
BAA vs RHP
2019
 
 
-5%
BAA vs LHP
2018
 
 
-43%
BAA vs RHP
2017
 
 
-25%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .318 247 45 20 70 10 1 13
Since 2017vs Right .226 379 104 18 79 12 1 11
2019vs Left .343 36 7 1 12 0 0 1
2019vs Right .362 52 9 5 17 1 0 5
2018vs Left .291 100 21 11 25 4 1 5
2018vs Right .166 174 58 6 27 6 0 3
2017vs Left .333 111 17 8 33 6 0 7
2017vs Right .250 153 37 7 35 5 1 3
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Home/Away Pitching Splits
Since 2017
 
 
-33%
ERA on Road
2019
 
 
-31%
ERA on Road
2018
 
 
-45%
ERA on Road
2017
 
 
-20%
ERA on Road
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2017Home 4.78 1.34 79.0 8 6 11 9.6 2.1 1.9
Since 2017Away 3.22 1.21 67.0 2 4 12 8.7 2.7 0.9
2019Home 10.64 2.00 11.0 3 0 0 9.8 2.5 3.3
2019Away 7.36 1.77 7.1 0 1 0 4.9 3.7 2.5
2018Home 3.29 0.99 38.1 4 2 1 9.9 2.3 1.6
2018Away 1.80 1.03 30.0 2 1 2 11.1 2.1 0.3
2017Home 4.55 1.55 29.2 1 4 10 9.1 1.5 1.8
2017Away 3.64 1.25 29.2 0 2 10 7.3 3.0 1.2
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Stat Review
How does Seunghwan Oh 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 this season's data (min 20 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
2.67
 
K/9
7.9
 
BB/9
2.9
 
HR/9
2.9
 
Fastball
91.1 mph
 
ERA
9.33
 
WHIP
1.91
 
BABIP
.392
 
GB/FB
1.14
 
Left On Base
60.2%
 
Exit Velocity
89.4 mph
 
Barrels/BBE
12.1%
 
Spin Rate
2192 rpm
 
Balls Hit 95+ MPH
36.4%
 
Swinging Strike
13.9%
 
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2018
2017
2016
The Final Boss wasn't exactly Mike Tyson in "Punch-out" in his second season stateside. Oh was excellent in 2016 and looked like an upper-tier closer option heading into the 2017 campaign, but he struggled on and off throughout the first half and was ultimately removed from the ninth-inning role for good in July. A decline in the quality of his slider was the biggest issue; he lost depth and movement on the breaking pitch, and opposing batters teed off on the offering to the tune of a .284 average and .463 slugging percentage, up from .164 and .246, respectively (according to Brooks Baseball). The 35-year-old signed with the Rangers, a team which lacks established arms at the back of the pen, so he has a path back to the closer role if he's able to return to 2016 form. Given how far he fell off last season, however, he looks more likely to end up as a middle reliever in a hitter's park, leaving him with little fantasy relevance in most formats.
Heading into the 2016 campaign, Oh was a 33-year-old rookie and St. Louis' oldest reliever. He'd been a fantastic player in Korea, but there were still questions about how his game would translate to the MLB. It didn't take long for Oh to put any doubts to rest, as he held a 1.59 ERA and .159 opponent batting average heading into the All-Star break. By the end of the year, Oh stood as the fantasy darling of the Cardinals' bullpen and had put together a 1.92 ERA, 0.92 WHIP, and 32.9 percent strikeout rate while walking less than six percent of the batters he faced. With a fastball that averages 92.8 mph, Oh doesn't overwhelm batters with power and frequently relies on his slider, which he uses over 31 percent of the time. Looking at 2017, Oh will begin the season as the Cards' closer and likely command a top-10 closer price at the draft table.
Oh has been a dominant reliever in Korea and Japan for the past decade, racking up 357 saves in 11 seasons between professional leagues in both countries. At age 33, with nothing left to prove as a closer in Asia, Oh signed a one-year deal with the Cardinals. There are questions as to whether his strikeout rate (above a batter per inning in his career) will hold up with the move to North America, but his long-term success overseas in a prominent late-inning role should offer the Cards some flexibility if Trevor Rosenthal succumbs to injury or a prolonged period of struggles as the team's preferred ninth-inning option. Unless one of those two scenarios opens the door for Oh to close in St. Louis, his value may be limited to leagues that reward holds.
More Fantasy News
Let go by Rockies
PFree Agent  F
Elbow
July 28, 2019
Oh (elbow) was officially released by Colorado on Sunday, Kyle Newman of The Denver Post reports.
ANALYSIS
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DFA'd by Colorado
PColorado Rockies  F
Elbow
July 23, 2019
Oh (elbow) was designated for assignment Tuesday by the Rockies.
ANALYSIS
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Set for season-ending elbow surgery
PColorado Rockies  F
Elbow
July 16, 2019
Oh (abdomen) will undergo surgery on his right elbow to remove loose particles and will miss the remainder of the 2019 season, Kyle Newman of The Denver Post reports.
ANALYSIS
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Scheduled for live BP
PColorado Rockies  F
Abdomen
June 27, 2019
Oh (abdomen) is scheduled to throw live batting practice Friday at Coors Field, Thomas Harding of MLB.com reports.
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Throws bullpen session
PColorado Rockies  F
Abdomen
June 25, 2019
Oh (abdomen) threw a bullpen session Tuesday, Kyle Newman of The Denver Post reports.
ANALYSIS
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