Throw every day. Professional pitchers on both the minor and major league levels throw every single day for at least 10 quality minutes. ... No curveballs until a pitcher is 14 or 15 years old. If you want to develop fastball arm strength, you have to throw the fastball!

How often should a pitcher throw?

It can be performed in the off-season and in-season, as a general maintenance throwing program. If you're going to use it in the off-season, to get your arm in shape, perform the routine about two times a week. It takes about 12 minutes to do.

How many days a week should a pitcher throw?

During week one, pitchers should throw to 1-35 pitches in a bullpen session. Pitchers throwing more than 21 pitches shall observe one day of rest. We recommend throwing 35 pitches on Monday, Wednesday, and Saturday.