The Giants and Brewers went to extra innings on Thursday, but the highlight of the game may have come way back in the second inning.

A man clad in socks and a top -- but no pants -- rushed the field from near third base and made his way toward Brandon Crawford at shortstop.

It's unclear what his intentions were, or which team he was rooting for, but security took him down from behind before he was able to do much.

The man was marched off the field by four security guards.