While he may have been a tad bit more lucky than good last year, he has improved his peripherals with the increased usage of his change up. The pitch was a solid secondary offering over the past few years, being thrown between 9-11% of the time, but he has upped the usage of his change up to 19.1% this season as he has reduced the reliance on his fastballs and slider.
Cueto also has not been afraid to attack right-handed hitters with the change up. Last season, he threw just 43 change ups to right-handed hitters. This year he has already thrown 120 change ups to righties, good for 12% of his pitches to right-handed batters. With the added frequency against right-handers, his whiff rate is up to 10.8% ó the highest of any of his pitches ó compared to last yearís 2.3% whiff rate, which was the lowest of any of his offerings. And not coincidentally, where Cueto has derived most of his value this season has been against right-handed batters, who have just a .236 wOBA against him this season compared to lefties who have a .325 mark.
Plenty more at the link above.