When pitching, as the baseball rolls toward the fingertips just prior to ball release, there are 2 muscles, the flexor digitorum superficialis (FDS) and the flexor digitorum profundus (FDP), that must contract at exactly the right time to extend then flex the joints in your fingers to control the instant of ball release. This is not something anyone has time to think about.
Your FDS controls your ability to flex your fingers at the metacarpal and proximal joints in your fingers. Your FDP controls your ability to flex your fingers at the distal joint. If either of these muscles are weak or become fatigued, the ball will roll up your fingers too quickly and be released too early, likely resulting in you missing up in the zone.
Then, if you try to overcompensate and hold the ball longer, you will likely miss down. Either way, muscle weakness in your FDS and FDP will prevent you from consistently controlling your release point.
FlexPro Grip improves your command by targeting and strengthening these two muscles in a way no other training method can.
fingertip ball release
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