I think it's important to take stock of the current rotation to help inform who they might try and acquire. - Lester - A pair of bad April starts notwithstanding, he's been fine and his overall numbers are as expected - Hendricks - got bombed his first 3 starts but has righted the ship and looks to be following a similar path as last year, no reason to expect he won't continue to be good going forward - Lackey - yesterday was his second truly good start in 7 tries, but he's also averaging 6 IP/start. It's on the lower end of expectations, but he's not pitching poorly for the back end starter he is. - Anderson - on the DL and hopefully sent to Belize when he's ready to return - Montgomery/Butler - They're going to be given a chance to take Anderson's spot, personally I'd expect Lackeyish production there, maybe with better run prevention over shorter outings. You know, like we expected from Anderson. - Arrieta - hasn't given up less than 3 runs since his first start, he's been quite bad. His track record gives him leash to work things out since the stuff doesn't appear to be diminished. With that out of the way, I think you can focus on two potential outcomes: 1) Cubs target middle of the road starter - This happens if Montgomery/Butler don't live up to the Lackey standard, or Lackey starts getting truly torched 2) Cubs target top 3 starter - This happens if Arrieta continues to pitch poorly, with a possibility of it happening in the above two situations as well The tricky thing for me is I expect Arrieta to bounce back but not pitch exceptionally, and I also don't expect Montgomery and Lackey to pitch poorly enough to lose a rotation spot, leaving them without a gaping hole to patch. You can always send Montgomery to the pen or Butler to AAA if you find a real good deal, but I'm also skeptical of the front office paying midseason prices for a Stroman/Archer type that would necessitate such a move either. Among the actual targets, I'd love to see if Stroman was actually available, and if they could take on some contract(s) that would help with his asking price. I also wouldn't turn down Teheran or Odorizzi, although for the latter I'm not sure he's such an upgrade that I'd want to displace Montgomery/Butler if they were doing fine.