Baseball players typically wave when they get on base as a way to acknowledge and communicate with their teammates and coaches in the dugout. It is a way for the player on base to let their team know that they are ready to receive instructions or signals from the coaches, who may be using hand gestures to communicate strategic instructions.
In addition, waving can also be a way for a player to show respect or gratitude to the opposing team or fans. It can be a sign of good sportsmanship and acknowledgment of the game’s traditions and unwritten rules.
Waving can also serve as a way for a player to signal to the umpire that they are ready to take their lead off the base. This can be important for players who are looking to steal a base or take an extra base on a hit.
Overall, waving is a common practice in baseball, and it serves as a way for players to communicate and show respect for the game and their opponents.