I have 4 3rd basemen, who should I drop? if any?

First of all why is harris starting at 2nd and Upton is on your bench? That solves one of your 3rd base issues, Upton should be veiwed as your everyday 2nd baseman. As for the other 3, all are productive (ignore the Teahen bashers, he got off to a slow start but now is hitting very nicely). Why dump one of them and let someone pick up a quality player for free? One thing to remember is that as long as Chipper is on your tream you need a backup, he has a long injury history so ride the bat while he plays and keep a backup handy at all times. If you feel the need to make a deal then offer up a couple of guys and see if you can land a SS, Lugo is solid but if you can nab a top hitter at SS you could move Lugo to 2nd (maybe use Upton as part of your trade bait). You have a pretty solid lineup....might look at a SS with stolen base potential so maybe offer up a guy or 2 for some pitching (dont know how your pitching is but it looks like you spent the top half of the draft on bats).