The Cubs got two prospects, Ronaldo Torreyes and Dave Sappelt, along with Travis Wood in exchange for Sean Marshall. I liked it before. I really, really like it now.
Ronaldo Torreyes is the better prospect. A bit on the smallish side but is a fantastic contact hitter with a good approach at the plate despite a low walk rate. Defensively he's athletic withgood range and a penchant for the spectacular play. Arm strength may limit him to 2B, however.
Torreyes hit .356/.398/.457 with 9 2B, 5 3B, 3 HR, 19/14 K/BB, and 12-for-19 SB in 67 games with Dayton (A)...as an 18 year old. The man can flat out hit. He's listed at 5'9" but some scouts think he may be just 5'7". A person I spoke to who got the chance to see him up close said that he believed he was indeed, closer to 5'9", however. You can read more about Torreyes here.
Sappelt, meanwhile, is also around 5'9" but is an excellent hitter himself, particularly against lefties. He can play CF and has the arm for RF, making him a solid candidate to spell DeJesus and Brett Jackson against lefties. He's MLB ready and could challenge Campana for a job this spring.
Sappelt spent last year in AAA Louisville and hit .313 with 7 HRs. Slash line was .313/.377/.358. He has a legitimate shot to challenge Tony Campana for a reserve spot or possible replace Marlon Byrd as a CF who can play against lefties if the Cubs trade Byrd and promote Jackson.
This is just a very good trade by Epstein and Hoyer. The Cubs have obtained 2 certain MLB players in Wood and Sappelt and probably a 3rd in Torreyes, who may have the highest ceiling of all of them.