The Red Sox have acquired Rick Porcello from the Tigers in exchange for Yoenis Cespedes, Alex Wilson, and Gabe Speier.
Porcello, who turns 26 two days after Christmas, had his best season last year, with a 3.43 ERA in 31 starts.
Current rotation: Porcello, Clay Buchholz, Joe Kelly, Wade Miley, and ???.
Also, check out Joon Lee's comprehensive look at Miley.