Non-MLB
Although they have not thrown an MLB pitch in 2024, Junichi Tazawa threw 6,588 pitches that were tracked by the PITCHf/x system between 2009 and 2018, including pitches thrown in the MLB Regular Season and the MLB Postseason. In 2018, they relied primarily on their Fourseam Fastball (92mph) and Curve (75mph), also mixing in a Splitter (87mph). He also rarely threw a Slider (79mph).
In 2018, compared to other RHP:
Their fourseam fastball is basically never swung at and missed compared to other pitchers' fourseamers, has some natural sinking action, has essentially average velo and results in somewhat more flyballs compared to other pitchers' fourseamers. Their curve has an exceptional bite and has slightly below average velo. Their splitter is an extreme flyball pitch compared to other pitchers' splitters, generates more whiffs/swing compared to other pitchers' splitters, is slightly firmer than usual and has slight armside fade. Their slider (take this with a grain of salt because they've only thrown 6 of them in 2018) comes in below hitting speed, is basically never swung at and missed compared to other pitchers' sliders, has exceptional depth, is an extreme flyball pitch compared to other pitchers' sliders and has short glove-side cut.