Diaz (shoulder) is batting leadoff as the designated hitter Tuesday against the Royals.
The 34-year-old departed Sunday's game against the Diamondbacks due to a left shoulder strain, but he's good to go for Tuesday's series opener following Monday's team off day. Diaz has carried a scorching bat in June with a .391/.468/.489 slash line in 25 games, though he has just seven extra-base hits (six doubles and one homer).