Suppose you're an MLB pitcher. And you're in the 9th inning, two outs, and one guy stands between you and a no-no. What would be the LAST way you'd want to lose your no-no?

HR that ties the game?

A walk and then an HR that wins the game?

How 'bout this: your catcher drops a pop foul that would have ended the game. On the next pitch, the batter gets a base knock.

Other ideas?