What does the umpire do when a player requests time immediately after receiving ball four?

When a player receives ball four, they are entitled to advance to first base without needing further action. If the player requests time immediately after being issued ball four, the umpire's priority is to ensure the rules are followed correctly regarding base advancement. The request for time is typically disregarded in this scenario, as it would not be appropriate to grant such a request when the player should be proceeding to first base.

This action aligns with the game rules in which a player must continue to fulfill their obligation to advance to a base once they are awarded a walk. Therefore, the umpire ignores the request and directs the player to first base, ensuring that the flow of the game continues smoothly and fairly.

Other options like pausing play or asking for clarification on the request would disrupt the normal progression of the game, while reviewing the play, in this case, is unnecessary since the outcome of ball four is clear.