San Francisco Giants
Although they have not thrown an MLB pitch in 2026, Christian Koss threw 42 pitches that were tracked by the PITCHf/x system in 2025, all of them occuring in the MLB Regular Season. In 2025, they relied primarily on their Change (51mph), also mixing in a Fourseam Fastball (84mph). He also rarely threw a Knuckleball (59mph).
In 2025, compared to other RHP:
Their change comes in below hitting speed, is basically never swung at and missed compared to other pitchers' changeups, has surprising cut action, dives down out of the zone and results in somewhat more flyballs compared to other pitchers' changeups. Their fourseam fastball (take this with a grain of salt because they've only thrown 3 of them in 2025) comes in below hitting speed, is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers and has some natural sinking action. Their knuckleball (take this with a grain of salt because they've only thrown 2 of them in 2025) flutters and floats unpredictably toward the plate.