For one inning, Cleveland Indians ace Justin Masterson was perfect. His whole performance on Monday night was great, too. Masterson threw seven innings, allowed only three hits, walked four and struck out 10 in a 3-2 victory over the Red Sox. But in the fourth frame, he pitched an "immaculate inning."
With a mix of fastballs and sliders (along with one sinker), Masterson struck out the side in order and he did it with just nine pitches. Jonny Gomes, Grady Sizemore and Stephen Drew all struck out swinging at a nasty slider.
"In the moment, I didn't realize it. I just realized it was strike, strike, see you," Masterson said after the win, via Jordan Bastian of MLB.com.
There have been 74 "immaculate innings" thrown by 70 pitchers in major league history, according to Baseball Almanac.
Masterson, who also threw 25 straight strikes against Boston, was the third pitcher this season to have an "immaculate inning." Both Philadelphia's Cole Hamels and Tampa Bay reliever Brad Boxberger did it back in May.
Who will be the next pitcher to accomplish the feat?