Because he was a undersized power forward where in college he was dominant and a high draft pick who was only a decent role player in the pros. Nothing to do with being overweight. Undersized was the key word in my post, not overweight or out of shape.
Probably an insurance policy for Kottaras if he gets injured today and Tek doesn't have to play if that happens. Also, we're going into 2 NL ballparks with no DH, makes more sense to carry a hitter instead of a pitcher.
Dont expect it to happen that Harper makes it far down the board but I wont be surprised either. It actually might be good for baseball if he does because then it will spark a much needed change to the MLB draft. That change is a draft salary cap. It will never happen from a FA standpoint but if you could apply it to the draft you move a lot of the power back to the lesser teams in the league instead of them being intimidated by agents and big bonuses into picking lesser players