Halladay turned in his best start in what has been a rocky spring for the veteran, who entered the game 0-1 with a 10.57 ERA. On Tuesday, he allowed one run over six innings -- on Adam Jones' RBI double -- and held Baltimore to just two singles from the second frame on. Halladay didn't issue a walk, but he hit leadoff batter Nolan Reimold, who went on to score. The right-hander retired seven of his last eight batters and also struck out five.
Making his fourth start of the spring season, Orioles lefty Brian Matusz allowed one run over five innings to a Phillies squad with four projected regulars (including Freddy Galvis now that Chase Utley is out).
Matusz wasn't particularly impressive, but he did manage to work his way out of several jams, getting three double-play balls and scattering seven hits and a walk in the 65-pitch outing. Matusz surrendered a first-inning run on former teammate Ty Wigginton's one-out RBI single, snapping a stretch of eight scoreless frames over two spring starts prior to Tuesday.
Jonathan Papelbon followed Halladay and worked a scoreless inning for the Phillies, walking one.
Orioles reliever Kevin Gregg pitched around a pair of doubles to toss a scoreless sixth, while Jim Johnson gave up the go-ahead run in the seventh on Galvis' RBI triple. Michael Martinez was hit by a pitch and moved to second on Halladay's sacrifice bunt, before Galvis blasted a ball over Jones, who toppled over trying to go back.
Nick Markakis made his debut in right field, playing six innings in the field and going 0-for-3 at the plate.
Up next: The Phillies have their only off-day of the spring Wednesday, but they resume their Grapefruit League schedule at 1:05 p.m. ET on Thursday on Gameday Audio against the Toronto Blue Jays in Dunedin, Fla. Left-hander Cliff Lee gets the start. Right-handers Chad Qualls and Jose Contreras also are scheduled to pitch. It will be Contreras' second Grapefruit League appearance. He is trying to ready himself for Opening Day after having elbow surgery in September.
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.