* WHEN, WHERE: Tonight, 9 o'clock at RFK Stadium, Channel 13.
* RIVALRY: Redskins have won five of the last seven games.
* KEY MATCHUPS: Redskins' DE Charles Mann vs. Eagles' rookie T Antone Davis; Redskins' RB Earnest Byner vs. Eagles' ML Byron Evans; Redskins' T Joe Jacoby vs. Eagles' DE Reggie White; Redskins' CB Darrell Green vs. Eagles' WR Fred Barnett.
* STRENGTH-ON-STRENGTH: The Redskins have the NFL's most potent offense, averaging 36.5 points. The Eagles have the league's No. 1 defense, giving up 210.3 yards a game. The Redskins have the NFL's best running offense, averaging 158 yards. The Eagles have the NFL's second-best rush defense, giving up 58.8 yards. The Redskins have the best third-down conversion rate in the league at 55.6 percent. The Eagles have the best third-down defense, with a conversion rate of 22.2 percent.
* ABOUT THE EAGLES: Philadelphia leads the league in time of possession at 36:13 despite losing quarterback Randall Cunningham to a knee injury in Week 1. Jim McMahon ranks fourth among NFC passers, and wide receiver Fred Barnett leads the NFC in catches with 21. The Eagles have gone to Heath Sherman as their featured running back. In a 28-14 Philadelphia win over Washington last season, Sherman rushed for 124 yards and had two touchdown catches. The Eagles do not have a runner in the NFC's top 20, however, and average just 2.5 yards a carry.
* ABOUT THE REDSKINS: Quarterback Mark Rypien is third among NFC passers, averaging 8.62 yards per pass. Byner is second in the NFC in rushing, averaging 4.7 a carry, and second in total scrimmage yards with 503. Brian Mitchell leads the NFL with a 21.3 punt return average. The Eagles rank 24th in punt coverage. The last time the Redskins started the season 5-0 was 1986, when they went to the playoffs as a wild-card team.