Jose Canseco is never above trying to pull a fast one on somebody to get out of work.  I found this blog on Yahoo Sports Big League Stew, and it's equal parts funny and equal parts pathetic.

In theory the Ozzie switch should have worked because I can't tell them apart in any pictures.  However, the cover was blown when the fight promoters realized Ozzie didn't have Jose's bicep tattoos that appeared in the promotional advertisements.

C'mon Jose, if you are gonna get your twin brother to 'fight your battles' at least force him to get temporary tats that look just like yours.  I'm sure Jose was at home tweeting, "I would have gotten away with it too, if it wasn't for those pesky fight promoters who paid 10 large for my appearance."