just a reminder to also concentrate on quickness, as they are totally different things.
In baseball you obviously need to get to top speed quickly.
Youngest son did all the perfect game stuff for many years. Top 10% in 60 speed, bottom 25% in 10 yard split.
By working on his quickness (he worked with a group called Parisi) we moved into top 5% of 60 speed, just by lowering his 10 yard split slightly.
He's still better 1st to 3rd/home and patrolling CF than he is stealing bases though (and as a 60 year old former base stealer, I get so frustrated, but I digress..........)
Good luck.