The Giants have placed starter Matt Cain on the 15-day disabled list with nerve irritation in his right elbow, Alex Pavlovic of CSN Bay Area reports. Pavlovic noted earlier on Friday that the Giants are preparing Chris Heston to start on Sunday. Heston was optioned to Triple-A Sacramento last Friday as a means to limit his workload.
Cain, 30, made his season debut on July 2 after missing the first three months of the season with a flexor tendon strain his right arm. In 10 starts spanning 52 2/3 innings, the right-hander compiled a 6.15 ERA with a 38/17 K/BB ratio.
Heston, 27, went to the minors after posting a 3.34 ERA with a 110/48 K/BB ratio in 145 2/3 innings spanning 24 starts.