It's that time to play a game of 'Guess That MLB Sack,' a challenge to all of you who jersey chasers who think you know your sacks. This sack belongs to a guy whose recent relationship news caused some Internet buzz. That's the girlfriend on the left. They love dogs. He's a third baseman and was one of baseball's golden boys before they turned their attention towards Justin Verlander and Kate Upton. Need more hints? You suck. JUMP!