Peavy has been working on adding a straight changeup to his arsenal this spring, CSN Bay Area reports. The 33-year-old Peavy can no longer retire hitters by simply overpowering them, so he has been working on his off-speed pitches to increase the different looks he offers hitter. He already threw a two-seam changeup - which breaks to his right similar to his sinker - but the four-seam changeup is straight, similar to his four-seam fastball. Peavy has seen his K/9 decline every season since 2012, but he seemed to turn a corner when he was traded to the Giants last season, changing his pitching style to match his lowered velocity and it resulted in a 2.17 ERA through 12 starts. It is unlikely that he will have that low of an ERA in 2015, but if he continues to mix speeds and locate, he could be a low-to-mid three ERA pitcher with a 6 K/9.