Yastrzemski is not in the lineup for Sunday's game against the Phillies.
The veteran outfielder will typically sit versus left-handed starting pitchers, but his absence Sunday is his first of the year against a righty (Aaron Nola). Yastrzemski has yet to get on track at the plate this season with a .188/.266/.247 slash line in 94 plate appearances, and his 26.6 percent strikeout rate would be the worst of his eight-year MLB career.