Baltimore Orioles
Although they have not thrown an MLB pitch in 2024, Nate Karns threw 5,294 pitches that were tracked by the PITCHf/x system between 2013 and 2019, all of them occuring in the MLB Regular Season. In 2019, they relied primarily on their Fourseam Fastball (91mph), also mixing in a Curve using a Knuckle Curve grip (80mph) and Change (86mph). He also rarely threw a Sinker (88mph).
In 2019, compared to other RHP:
Their fourseam fastball is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers, has less armside movement than typical and has slightly below average velo. Their curve using a knuckle curve grip (take this with a grain of salt because they've only thrown 18 of them in 2019) results in more flyballs compared to other pitchers' curves, has a sharp downward bite and has primarily 12-6 movement. Their change (take this with a grain of salt because they've only thrown 13 of them in 2019) generates an extremely high number of swings & misses compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups, is slightly firmer than usual and has some natural sink to it. Their sinker (take this with a grain of salt because they've only thrown 1 of them in 2019) is so slow that it is substantially gravitational, is basically never swung at and missed compared to other pitchers' sinkers, is an extreme flyball pitch compared to other pitchers' sinkers and has less armside run than typical.