Maybe that's a good thing.
Halladay is tied with Dodgers left-hander Clayton Kershaw for the league lead with 175 2/3 innings. The workhorse right-hander led the majors with 250 2/3 innings last season, then pitched another 22 innings in the postseason as the Phillies made it all the way to the NL championship series.
So far, it doesn't look as if Halladay has been affected by all those innings one bit. He is 6-1 with a 2.51 ERA in his last eight starts and is tied for the NL lead with 15 victories.
Sunday's game was called more than two hours before the scheduled first pitch, and it's unclear when Halladay will make his next start. NL East-leading Philadelphia is off Monday and opens a three-game series against West-leading Arizona on Tuesday at Citizens Bank Park.
Halladay last pitched last Monday, when he allowed one run and nine hits over 6 1/3 innings in a 5-3 victory at the Los Angeles Dodgers.
Philadelphia and Washington split the first two games of the series. Livan Hernandez tossed 6 2/3 innings of one-run ball in the Nationals' 4-2 victory on Friday night, but the Phillies bounced back with an 11-3 win Saturday night.
Sunday's game will be made up on Sept. 20 as part of a split doubleheader. The scheduled unveiling ceremony for the Harry Kalas statue was pushed back to Tuesday.
Wang, who missed more than two years following shoulder surgery, pitched six scoreless innings in a 3-1 victory at the Chicago Cubs on Tuesday. It was his first win since June 28, 2009, for the New York Yankees at the Mets.
The right-hander, who won 19 games in 2006 and 2007 with the Yankees, is 1-2 with a 3.60 ERA in three starts for the Nationals.