Four division titles will be decided today and Monday as the National Football League wraps up its regular season.

Miami already has clinched the East Division title in the American Conference and Los Angeles the West Division in the National Conference. Besides those two, five teams have clinched playoff spots -- Pittsburgh, Houston, Dallas, Philadelphia and San Diego.

Six teams are in contention for three other playoff spots -- Tampa Bay, Denver, Washington, Chicago, Cleveland and Oakland.

Pittsburgh, the defending Super Bowl champion, is tied at 11-4 with Houston for first place in the AFC Central Division. The Steelers play the Bills (7-8) today at Buffalo at 1 p.m. (Wrc-tv-4) and can win the division title and the home advantage in the playoffs. The Steelers are favored by 13 points.

The Oilers play Philadelphia (10-5) at Houston and are six-point favorities in the 4 p.m. game. They probably will know the outcome of the Steelers-Bills game by kickoff time. The Steelers would have to lose and the Oilers win for Houston to take the AFC Central title.

The Buccaneers (9-6) play Kansas City (7-8) at Tampa at 1 p.m. and can take the NFC Central title by winning, after failing to do so the last three weeks. Tampa Bay is a three-point favorite.

The Bears (9-6) play the Cardinals (5-10) in Chicago at 2 p.m. and are favored by 4 1/2 points. By winning, the Bears could take the NFC Central title, if Tampa Bay loses.

In the AFC West, San Diego (11-4) has a one-game lead over Denver (10-5). The Chargers play the Broncos at 9 p.m. Monday (WMAL-TV-7) in San Diego. The Chargers are favored by 6 1/2 points.

A victory for the Broncos would break a tie at 11-5 with a two-game sweep over the Chargers.

The Raiders (9-6) play Seattle (8-7) in Oakland Sunday and the Raiders are favored by 7 1/2 points. If the Raiders win and Denver loses to San Diego. Oakland will clinch a wildcard spot rather than Denver.

The Browns (9-6) play at Cincinnati (3-12) and the Bengals are favored by 3 points. If the Browns win and Oakland and Denver lose, Cleveland could make the playoffs on the basis of net points overall. The Broncos have a plus of 37 and the Browns 11.