Every team in the division has serious flaws. Tampa has great starting pitching -- that is its strength. There offense is not very good, especially without Long and Jennings. Matsui could be a nice pickup for them. Their bullpen is nothing special.
The Yankees have a so-so rotation with Pineda being injured and Hughes continued inconsistency, but they have a powerhouse offense. Their bullpen is still strong, but it took a major hit with Mo going down.
The Orioles are vastly improved. They have good balance, but are not spectacular in any aspect of the game. Their offense is pretty strong, but not on a level with the Yanks, Sox or Toronto. Their starting pitching has done surprisingly well, but they are not deep at all, and the talent level there is not high. They lack a big stud in the rotation. Their bullpen looks pretty good.
Toronto has a very strong dangerous linup. Encarnacion is coming into his own, but Bautista is still looking for his stroke. Their starting pitching with Morrow, Romero and Alvarez is decent but not deep, but their pen is weak.
Because each team has some big weaknesses, the Sox are able to stay close playing what is really a band of misfits. The Sox rotation has the capability of being the best in the division with the emergence of Doubront. That plus four excellent offensive players: Ortiz, Youk, Pedroia and Gonzo could carry them through on a nice streak even while a lot of guys are on the DL.