Osvaldo Bido is an interesting case. The 28 year old righty was DFA'd by the Pirates earlier in the offseason and the A's went out and picked him up. He was signed to a major league deal for one year at the league minimum.
Bido still has two option years remaining, and has had mixed results at the major league level. He made his big league debut in 2023 after spending six seasons in the Pirates system.
In his 9 starts for the Pirates last year, Bido posted a 5.86 ERA and struggled to a 3.7 BB/9 mark. He was slightly better out of the bullpen, but not significantly so. His 20.3% strikeout rate is below league average, he walks too many guys, and he struggled finding the right pitch mix.
Bido's best pitch is his four-seamer, which he throws just a touch under 95mph. Outside of that, he throws a sinker, slider, and changeup that all need work. The A's pitching development team hasn't been the best over the past several years but it's possible they can make some adjustments to Bido's pitch mix and get him back on the right track.
At the moment though, Bido just doesn't have the control necessary to pitch in the majors. His off-speed stuff gets hit too hard and he doesn't have the put-away pitch necessary to get strikeouts. The best thing for him is likely to head to Triple-A, get his pitch mix in order, and try to make a run at a rotation spot in the summer.