I have a lot of bests, but there is, as a parent of a pitcher, one that comes to mind, but not as a pitcher.
HS district playoffs, DK had pitched the game to get us in the playoff a few days earlier so he couldn't pitch, but went in as the DH and hit a HR to win the game to advance to the regionals.
Most precious baseball memory will always be the first day of t-ball, oh the joy and the excitement of playing "real" ball. All those years of preparation....throwing and catching the ball and hitting off of the "T" finally were going to pay off.