The Orioles will be playing for a series victory against the Blue Jays when the two teams wrap up a four-game set at Oriole Park at Camden Yards on Sunday afternoon.
Chris Tillman takes his 4-4 career record against Toronto to the mound in the finale of the American League East matchup. In his five home starts against the Blue Jays, the 26-year-old is 2-1 with a 1.82 ERA.
Tillman hasn't strung together wins in back-to-back outings since April. Since then, the right-hander is 2-2 in nine starts.
Tillman played through two rain delays and a few bases-loaded situations to pitch six strong innings on Tuesday. He took the loss against the Red Sox, but allowed one run on seven hits.
"I wouldn't say difficult, just different," Tillman said of going through the pair of rain delays. "You've got to learn and adjust, and that was the first time I've done that."
J.A. Happ will start for the American League East-leading Blue Jays. Happ laboured through 3 2/3 innings against the Twins on Tuesday -- his second-shortest outing of the season -- and allowed six hits and three earned runs.
The 31-year-old left-hander got no run support in the loss as his record fell to 5-3 on the season.
The division's top team has been on a bit of a backslide lately, highlighted by rare offensive struggles. The Blue Jays lost four of five games entering their series against the O's, and were shut out three times in the last seven days. They'll be playing for the series split on Sunday.
Edwin Encarnacion has hit a cold streak after scorching through the month of May. The Blue Jays' cleanup man is hitting .179 with two home runs in June.
"He was going so good for so long," said Blue Jays manager John Gibbons. "I think they start pitching him a little different, had to be a little more careful with him during the end of that streak and now he's trying to make something happen."
The Blue Jays continue on their 10-game road trip in New York against the Yankees on Monday, while Baltimore travels to St. Petersburg to face the Rays for a three-game series.
Blue Jays: Santos activated
Toronto activated Sergio Santos from the disabled list before Saturday's game against the Orioles in Baltimore. To make room for the righty, Toronto optioned outfielder Darin Mastroianni back to Triple-A Buffalo after he spent just two days on the Major League roster.
Santos missed 32 games with right forearm soreness that sent him to the DL on May 10. He struggled in 14 appearances before going down, posting a 9.00 ERA in 12 innings. Mastroianni played in just one game for the Blue Jays and went 0-for-2.
Santos made a pair of rehab appearances for Double-A New Hampshire, where he allowed four earned runs in two innings.
Orioles: Rotation set for series vs. Rays
With right-hander Miguel Gonzalez eligible to come off the disabled list on Sunday, manager Buck Showalter has set his rotation for the team's three-game series beginning Monday against the Rays in St. Petersburg.
Showalter said Wei-Yin Chen will pitch the opener, followed by Gonzalez and Kevin Gausman.
The 23-year-old Gausman was called up from Triple-A Norfolk while Gonzalez recovered from a right oblique strain. He's allowed two earned runs in 13 innings while winning both of his starts.
• Orioles third baseman Manny Machado was back in the No. 2 spot in the batting order Saturday after hitting seventh the last three games. He went 2-for-4.
• Right-hander Dylan Bundy, the No. 4 overall pick in the 2011 Draft, will pitch in his first game since 2012 on Sunday when he starts for the Class A Aberdeen Ironbirds at Hudson Valley. Bundy underwent Tommy John surgery on his right elbow in June, 2013.
Jamie Ross is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.