Red Sox starter Justin Masterson moved to 2-0 on the season with a win over Baltimore on Monday.
Masterson picked up the victory with five innings of three-hit ball. He allowed one run, walked three and struck out six.
Masterson threw 53 strikes in 93 pitches and lowered his ERA to 5.74.
"The slider was working real good," Masterson said, per WEEI. "That's what helped me in 2013 and helped me to be a better pitcher. The best way to do that is to throw it for strikes in good counts."
Masterson's next start is scheduled for Saturday, at Baltimore, in a rematch with Wei-Yin Chen.