Chicago Cubs
Although they have not thrown an MLB pitch in 2025, Brad Wieck threw 1,557 pitches that were tracked by the PITCHf/x system between 2018 and 2024, including pitches thrown in the MLB Regular Season and Spring Training. In 2024, they relied primarily on their Fourseam Fastball (86mph), also mixing in a Splitter (79mph) and Curve (68mph). He also rarely threw a Change (80mph).
In 2024, compared to other LHP:
Their fourseam fastball comes in below hitting speed, generates a high number of swings & misses compared to other pitchers' fourseamers and has much less armside movement than typical. Their splitter comes in below hitting speed, has surprising cut action, results in more flyballs compared to other pitchers' splitters and has some natural sink to it. Their curve has an exceptional bite, comes in below hitting speed, generates an extremely high number of swings & misses compared to other pitchers' curves and has slight glove-side movement. Their change (take this with a grain of salt because they've only thrown 1 of them in 2024) generates an extremely high number of swings & misses compared to other pitchers' changeups, has surprising cut action, is an extreme flyball pitch compared to other pitchers' changeups, has slightly below average velo and has some natural sink to it.