Same week that Canseco's head assisted in an HR, he throws out his arm pitching.
I was at this game. The Red Sox were killing the Rangers. At some point in the late innings we see Canseco warming up in the bullpen. We got a couple pictures of him in the bullpen, but didn't really think he would go in. But sure enough, he comes in (I think to start the inning). After 8 batters, 2 hits, 3 walks, 3 runs and 33 pitches he needed surgery and missed 2/3 of the season! Lol.