The Orioles scored four runs off Rays ace David Price in the second inning. Ronny Paulino, making his spring debut, hit an RBI single in his first at-bat before Miller blasted a ball over the center-field fence.
Price exited his third spring start after 3 2/3 innings, charged with four runs on five hits and two walks. He also had four strikeouts.
"I felt good," said Price. "My body keeps getting better every time out. ... My body feels pretty close to where it needs to be right now, and that's a good thing."
Orioles starter Jason Hammel, facing his former club, went three innings and just allowed one run, on a second-inning homer by Matt Joyce. Hammel didn't allow another hit, picking up two strikeouts in a solid second spring outing. Brad Bergesen followed Hammel with three scoreless frames.
"It was definitely a step forward," Hammel said. "[My] fastball command was much better. That's my emphasis this spring, and of the three innings, the first and the third were very good for me. The second it seemed like I was working on my full counts, but I wasn't. I feel that things are coming along. The curveball was working for me today, and the changeup, too."
Rays rookie Matt Moore made his much-anticipated spring debut in the fifth inning, retiring the top of the O's lineup in order.
Baltimore reliever Oscar Villarreal issued back-to-back walks to open Tampa Bay's half of the ninth. A fielding error two batters later loaded the bases, ending Villarreal's outing and setting the stage for Jesus Feliciano's two-run double. Hak-Ju Lee added a two-run triple, and Chris Gimenez completed the rally with an RBI single.
Orioles left fielder Nolan Reimold was back in the lineup for the first time since taking a pitch in the face from Rays righty Alex Cobb on Friday. Reimold, who chose to not wear a protective shield, singled in his first at-bat.
Up next: Jeremy Hellickson will make his third appearance of the spring when the Rays host the Marlins on Wednesday at 1:05 p.m. ET at Charlotte Sports Park. The reigning American League Rookie of the Year will be followed by Fernando Rodney, Joel Peralta, Brandon Gomes and J.P. Howell. Anibal Sanchez will start for the Marlins.
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.