Read about it Here
RHP Joe Gunkle was designated for assignment to make room.
TonyOH says:
“According to Brooks Baseball
Miguel Castro has thrown 678 pitches that have been tracked by the PITCHf/x system between 2015 and 2017, including pitches thrown in the MLB Regular Season and Spring Training. In 2017, he has relied primarily on his Fourseam Fastball (97mph), also mixing in a Slider (85mph). He also rarely throws a Sinker (97mph).
BETA Feature:
Basic description of 2017 pitches compared to other RHP:
His fourseam fastball generates an extremely high number of swings & misses compared to other pitchers’ fourseamers, has heavy sinking action, has an obvious tail, is blazing fast and results in somewhat more flyballs compared to other pitchers’ fourseamers. His slider (take this with a grain of salt because he’s only thrown 7 of them in 2017) generates an extremely high number of swings & misses compared to other pitchers’ sliders, is an extreme flyball pitch compared to other pitchers’ sliders, has primarily 12-6 movement and has some two-plane movement. His sinker (take this with a grain of salt because he’s only thrown 1 of them in 2017) has heavy sinking action, is basically never swung at and missed compared to other pitchers’ sinkers, is thrown at a speed that’s borderline unfair, is an extreme flyball pitch compared to other pitchers’ sinkers and has slight armside run. “