Bieber has yet to face Boston in his Major League career, and he allowed three runs on seven hits through 4 1/3 innings against the Reds last Wednesday, upping his season ERA to 4.37.
The power righty will try to continue his dominance at Fenway, where he won his first two starts for the Red Sox while allowing no runs over 15 innings. Eovaldi is 2-1 with a 2.70 ERA in his career against Cleveland.