Jackson Kowar (P) - Seattle Mariners
Jackson posted a 4.24 ERA over 17.0 innings in 2026 with a 2-0 record. He recorded 1 hold. Jackson was worth -0.2 WAR last season.
Pitching Splits Pitching performance splits against left-handed and right-handed batters.
| Split | K% | K/9 | BB% | wOBA | xFIP | HH% |
|---|---|---|---|---|---|---|
| vs LHB | 18.8% | 7.4 | 10.4% | 0.395 | 5.10 | 41.4% |
| vs RHB | 23.2% | 10.2 | 15.2% | 0.452 | 4.92 | 38.4% |
| Overall | 21.2% | 8.8 | 13.0% | 0.426 | 5.25 | 39.8% |
Pitching Splits — K% & BB% (2020) Strikeout and walk rates against left-handed batters, right-handed batters, and overall.
Pitching Splits — wOBA (2020) Weighted on-base average allowed against left-handed batters, right-handed batters, and overall. Lower is better for pitchers.
Pitching Splits — HH% (2020) Hard-hit rate allowed against left-handed batters, right-handed batters, and overall. Lower is better for pitchers.
Season Context Key season-level pitching metrics including games played, SIERA, and batted ball data.
Batted Ball Profile (2020) Ground ball vs fly ball tendency — higher GB% generally means fewer home runs allowed.
Traditional Stats Standard pitching stats: ERA, FIP, W/L, saves, holds, innings, and games started. 2020 Season
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Jackson Kowar MLB Stats 2020
Jackson Kowar is a P for the Seattle Mariners. View Jackson's current season stats, recent performance trends, and key statistical categories to evaluate fantasy value and make informed DFS lineup decisions.
Jackson Kowar DFS Salary Today
Today's DFS salary for Jackson Kowar: FanDuel $5,500. Track daily salary changes and find value plays using FTA's projection and ownership data. View Jackson's daily projections or check today's player props and betting lines.
Stats updated April 17, 2026.