Four of the Washington Redskins six nondivision opponents next season had a combined record of 10-46 last year.

The Washington Post learned yesterday that the Redskins will face only two non-Eastern Division teams with winning records - the Baltimore Colts (11.3) in Baltimore Monday night, Nov. 7, and the Los Angeles Rams (10-3-1) at RFK Stadium Dec. 17 in the final game of the year.

The Redskins' other out-of-division opponents are Tampa Bay (0-14 in 1976), Buffalo (2-12), Atlanta (4-10) and Green Bay (4-10:.

As always, they will play home and away games against their Eastern Division rivals - the Giants, Eagles, Cardinals and Cowboys.

For the first time since the 1971 season, the Redskins also will play the Cowboys in Dallas in the first meeting of the teams on Oct.16. The second game will be at RFK Stadium on Nov. 7.

Redskin coach George Allen had lobbied for just such a change in recent years, claiming that the second meeting usually decided a playoff berth or division championship. He complained the Cowboys had the edge because the second game was in Texas each of the last five seasons.

The Redskins will open the regular season in the New York Giants Meadowlands Stadium on Sept. 18, and four of their final seven games will be on the road, including two of the last three.

The most difficult portion of the schedule will come after a Monday night home game against the Packers Nov. 21. The Redskins will have only five days to prepare for the Cowboys the following Sunday, at home.

They will play in Buffalo on Dec. 4, then will have another ifve days to prepare for a Saturday afternoon game at St. Louis on Dec. 10, followed by the finale against the Rams.