Boston Red Sox
Although they have not thrown an MLB pitch in 2024, Daniel Schlereth threw 1,631 pitches that were tracked by the PITCHf/x system between 2009 and 2012, all of them occuring in the MLB Regular Season. In 2012, they relied primarily on their Curve (79mph) and Sinker (92mph), also mixing in a Fourseam Fastball (91mph).
In 2012, compared to other LHP:
Their curve has a sharp downward bite and is slightly harder than usual. Their sinker generates fewer whiffs/swing compared to other pitchers' sinkers and has slightly above average velo. Their fourseam fastball (take this with a grain of salt because they've only thrown 14 of them in 2012) generates fewer whiffs/swing compared to other pitchers' fourseamers, results in more flyballs compared to other pitchers' fourseamers and has essentially average velo.