Castillo, 32, had a 3.64 ERA in 30 starts last season, striking out 175 batters in 175 1/3 innings. There's some concern about his fly ball rate translating to more home runs away from the pitcher-friendly T-Mobile Park, but he's proven to be a workhorse throughout his career.

Maren Angus-Coombs of San Diego Padres on SI relayed a forecast from Bleacher Report’s Zachary D. Rymer which laid out a potential way in which the Padres could acquire Toronto Blue Jays superstar Vladimir Guerrero Jr.