Following a respectable but losing return from the disabled list, Oswalt looks to post his second win since April and help Philadelphia even its series with the Washington Nationals on Saturday night.The only time in the past two months the Phillies (77-41) have dropped back-to-back games was July 27-28 against San Francisco. They bounced back from that series loss -- their only one since mid-June -- by winning 12 of 13 before falling 4-2 on Friday night as Washington stopped a seven-game skid in Philadelphia.The other game Philadelphia didn't win this month was a 3-1 defeat at San Francisco on Sunday, when Oswalt returned after missing six-plus weeks with lower back inflammation."He looks healthy, moved pretty good and threw pretty good," manager Charlie Manuel said.The right-hander tied a career high by allowing 12 hits, but only two went for extra bases -- both doubles -- and he gave up three runs in six innings."That was better than I thought I was going to be," Oswalt said. "It wasn't like I was giving up doubles into the gap. It feels good to be back on the field. Hopefully I can finish out the year."Oswalt (4-7, 3.84 ERA) hasn't started at home since beating the Cubs on June 12, throwing seven innings in a 4-3 win. That's his only victory in 10 outings since April 21 after going 3-0 through his first four.He's yielded three earned runs in his last 23 innings against the Nationals (57-61) but lost the only time he faced them this year, getting pulled after five innings in a 2-1 defeat June 1.John Lannan (8-7, 3.56) won that matchup, allowing an unearned run in 5 1/3 innings, after entering with an 0-10 record versus the Phillies. He'll face Oswalt again Saturday.Lannan is 3-0 with a 2.19 ERA in his last six road starts and pitched well at Colorado on Sunday, giving up one run in six-plus innings but not getting a decision in a 3-2 win. He walked four batters for the fourth time in five starts but is 3-1 in that span.The left-hander hopes to see Michael Morse return. The team's top hitter, batting .404 with three homers and 10 RBIs in his last 12 games, missed the series opener with an elbow contusion suffered when he was hit by a pitch Thursday."It feels better already," Morse told the Nationals' official website Friday. "I'm hoping to get in tomorrow. It's going to hurt. Like any kind of injury, it's going to hurt. You play through the pain."One Washington hitter who had been as hot as Morse was Ryan Zimmerman, but he had a 19-game hitting streak snapped Friday.Zimmerman has five hits -- two homers -- in his last 12 at-bats off Oswalt, and Laynce Nix is 10 for 20 with three homers and three doubles against him.Jayson Werth has struck out in 10 of his last 18 at-bats versus Oswalt, and he's 2 for 14 back in Philadelphia this year.The man who recently took Werth's former spot as Philadelphia's everyday right fielder -- Hunter Pence -- was 0 for 3 on Friday. The Phillies' only two losses since acquiring Pence have come when he's gone hitless.Pence had a sacrifice fly in the ninth after Ryan Howard, who had his third multihit effort in four games, struck out with two runners on.