After an unprecedented breakout in his rookie season, outfielderJake McCarthyhas become a sign of hope for the meddling Arizona Diamondbacks. The 25-year-old got straight to work in his first season in the pros, and he's veering toward the "perennial talent" category if he continues to impress. McCarthy owned a .283/.342/.427 triple line with a 118 OPS+ this past year, and finished fourth in Rookie of the Year voting. His strikeout numbers aren't where they should be (21.9%), and it wouldn't ...