From Denver: Players from two teams made a gesture of apparent protest during a game. They tilted their caps, reportedly in response to comments made by umpire Doug Eddings. The incident began when Eddings instructed a rookie pitcher to straighten his hat, leading to an argument with the team's manager. The argument resulted in the manager's ejection from the game.

The protest involved most of the players from one of the teams, as well as players from the opposing team. Further details about the incident and the events that followed are available.

The teams involved in the incident are the Cardinals and the Rockies.