What is indicated by the pitcher having his entire pivot foot in contact with the pitching plate?

When the pitcher has his entire pivot foot in contact with the pitching plate, it indicates a legal pitching position. For a pitch to be delivered legally, the pitcher must have both feet in a proper position relative to the pitching plate. The pivot foot must remain in contact with the plate or be in a position to push off when delivering the ball. This is crucial because any deviation from this can lead to a violation of the pitching rules, but in this case, the complete contact with the pitching plate confirms the legality of the pitcher's stance.

A legal pitching position allows the pitcher to execute their delivery. The pitcher is required to maintain specific foot placements and movements to ensure fair play. Understanding these regulations helps umpires accurately assess pitches and maintain the integrity of the game.