On May 3rd, the Tigers were 8 games behind the Indians and now they're only 3.5 games out after winning 9 of their last 10. Surprisingly, Miguel Cabrera hasn't been a big factor in May after a big April. It's been Victor Martinez and Jhonny Peralta leading the way, each with an OPS in May over 1.200.
Meanwhile, the Indians have stopped hitting, especially Grady Sizemore (he's also been hurt the last few days) and Shin-Soo Choo. If they don't start hitting soon, they'll find themselves in 2nd place.