Possible Duplicate:
Why is the historical present tense used so often by sports broadcasters?
Yesterday I watched a basketball game. There was a substitution, and a commentator said “Vince Carter comes in”.
I've always thought that in this situation it is better to say “Vince Carter is coming in”, because the action is happening at this moment, or “Vince Carter came in” if he already on the court. Why did he say it that way?