Joba Chamberlain hits ex-teammate Derek Jeter with pitch, feels horrible, promptly apologizes

Remember when Joba Chamberlain was a Yankee? He and retiring captain Derek Jeter had some wonderful times together -- like this rad double play in a game against the Indians:

And this strike-'em-out-throw-'em-out of then-Red Sox Sean Casey and Kevin Youkilis:

With Chamberlain now on the Tigers, the two faced off at Yankee Stadium on Tuesday, and the right-hander kicked off the at-bat by sticking his tongue out at No. 2:

And then, well:

It clearly wasn't intentional -- Chamberlain looked emotionally distraught after plunking the future Hall of Famer:

And even apologized:

Don't worry: Jeter's perfectly okay, and the Tigers won the game 4-3.