Skip to main content
Skip to navigation
ESPN
NFL
NFL
NBA
NBA
MLB
MLB
NHL
NHL
Men's World Cup
Men's World Cup
WNBA
WNBA
Golf
Golf
More Sports
More Sports
Watch
Watch
Fantasy
Fantasy
Where to Watch
Search
Matt
Koch
Relief Pitcher
Birthdate
11/2/1990
BAT/THR
Left/Right
Birthplace
Cherokee, IA
College
Louisville
Overview
News
Stats
Bio
Splits
Game Log
Biography
Position
Relief Pitcher
Birthdate
11/2/1990
BAT/THR
Left/Right
Birthplace
Cherokee, IA
Debut Year
2016
College
Louisville
Career History
Colorado Rockies
2023-2024 (2 Seasons)
Seattle Mariners
2022-2022 (1 Season)
Arizona Diamondbacks
2016-2019 (4 Seasons)
MLB News
Fantasy Baseball Reliever Depth Chart
Our updated reliever depth chart displays the closer hierarchy for each team, as well as the fatigue factor in each MLB bullpen.
Fantasy baseball forecaster: Team hitting ratings
Stay ahead of the game and optimize your fantasy baseball hitters with our forecaster, which provides a rolling 10-day outlook of every team's hitting matchups as well as the potential for stolen bases.
Fantasy baseball forecaster: Pitcher projections for the next 10 days
Keep up to date on who is pitching -- and how well they're expected to do -- with our forecaster, which provides a rolling 10-day outlook of every team's probable starting pitchers with game score projections.
MLB betting tips for Tuesday: Royals may struggle against Texas
All of the odds, recommended prop bets and trends in baseball for Tuesday, June 9.
2026 MLB All-Star full roster predictions and debates
Bryce Harper or Freddie Freeman? Ben Rice or Nick Kurtz? Here's our one-month-out look at who will make it to Philadelphia.
How could an MLB salary cap work? Lessons from NBA, NHL, NFL
We examine how caps function in other pro sports to find out what it means for baseball's ongoing CBA negotiations.