In his MLB career, Koosman has allowed 3,635 base hits and he has 2,556 K’s in 3,839 frames. He has surrendered 1,433 earned runs while holding a WHIP of 1.259 and a FIP of 3.3. His strikeout to walk ratio is 2.13 and he has gone up against 15,996 opposing batters thus far in his career. Koosman (222-209 career mark) has a 3.36 ERA and has conceded 8.5 hits per nine innings.
