My son plays 1st base on a 14U travel team and has had past issues jamming his thumb. Poorly thrown balls that he had to scoop or make a last ditch adjustment would sometimes result in a bruised/jammed thumb. This problem has been eliminated by the Defender Pro glove. Another positive is the thumb guard provides more leverage on the thumb portion of the glove helping him close the glove even harder. This is a must buy for catchers and players looking for thumb protection.