New York Yankees star right-hander Gerrit Cole took himself out after six innings of his start Monday night at the Texas Rangers with what the team called a right calf cramp.

The Yankees said Cole will continue to be monitored Tuesday.

Video from the YES Network broadcast showed that Cole picked up his right leg gingerly after throwing a warmup pitch before the seventh inning. He was rubbing his calf area and called for trainers.

Cole finished his start having allowed one run on four hits with one walk and nine strikeouts over six innings.

The 33-year-old didn’t make his season debut until June after suffering nerve inflammation in his pitching elbow during spring training. He was in line for the win Monday night, which would improve his record to 6-3 in 13 starts, and his ERA went down to 3.65.