Coby Mayo is serving as the Orioles’ designated hitter tonight in his return to the lineup.

Mayo was scratched in Game 1 of Sunday’s doubleheader. He’s missed the last four games.

Tyler O’Neill is batting seventh and playing right field, followed by third baseman Blaze Alexander and second baseman Jeremiah Jackson. The Rays are starting left-hander Steven Matz, which moves Samuel Basallo, Colton Cowser and Jackson Holliday to the bench.

The Orioles are trying to complete the sweep tonight before the Blue Jays come to town.

Adley Rutschman is hitting .435 with a .870 slugging percentage when ahead in the count this season, which is well above the league average of .329 and .568.

Taylor Ward, leading off again tonight, is batting .173/340/.235 in 23 games this month, compared to .304/.438/.443 in his first 31 games. He had 27 walks and 21 strikeouts heading into May, and has walked 21 times this month and struck out 29.

“His at-bat quality’s been outstanding. I don’t want him changing anything he’s doing,” said manager Craig Albernaz.

“I would love for you to ask that question next month about how June went. It will be interesting to see.”

Outfielder Dylan Beavers, on the 15-day injured list with a strained oblique, started a hitting progression yesterday in Sarasota.

Down on the farm, Boston Bateman allowed one earned run (two total) and two hits with seven strikeouts in five innings in High-A Frederick’s 5-4 loss at Jersey Shore. Ike Irish played right field and had an RBI single. Shortstop Wehiwa Aloy also singled and is batting .307 with a .921 OPS.

Double-A Chesapeake second baseman Aron Estrada was 3-for-5 with two doubles, three RBIs and two runs scored in Erie. First baseman Anderson De Los Santos was 4-for-5 with a triple and two RBIs.

For the Orioles
Taylor Ward LF
Gunnar Henderson SS
Adley Rutschman C
Pete Alonso 1B
Coby Mayo DH
Leody Taveras CF
Tyler O’Neill RF
Blaze Alexander 3B
Jeremiah Jackson 2B

Trey Gibson RHP

For the Rays
Chandler Simpson LF
Junior Caminero 3B
Jonathan Aranda 1B
Yandy Díaz DH
Richie Palacios 2B
Ryan Vilade RF
Cedric Mullins CF
Carson Williams SS
Hunter Feduccia C

Steven Matz LHP

The Rays added former Orioles right-hander Jonathan Heasley to their bullpen and optioned Trevor Martin.

Here are the probables for the Blue Jays series at Camden Yards:

Thursday: RHP Chris Bassitt vs. LHP Patrick Corbin
Friday: LHP Trevor Rogers vs. TBA
Saturday: RHP Brandon Young vs. RHP Trey Yesavage
Sunday: RHP Kyle Bradish vs. TBA