Key Stat

286: Total rushing yards by the Falcons after four games.   Stats matchup

Key Matchup

Saints front four and linebackers vs. Falcons offensive line and quarterback. The Saints will be sure to pressure whoever calls signals for the wounded Birds.

Player to Watch

Ricky Williams: Will the Saints franchise running back be able to play without a new injury to go along with his elbow and ankle?

49ers (3-1) at Rams (3-0), 1 p.m.

Key Stat

162: Total yardage by Rams wide receiver Az-zahir Hakim last week, who caught three TD passes and returned a punt for a TD against the Bengals.   Stats matchup

Key Matchup

Rams QB Kurt Warner, who has thrown for three touchdowns in each of his last three games, vs. the 49ers secondary, which is giving up an average of 254 yards per game in the air.

Player to Watch

Charlie Garner: Rejuvenated 49ers running back is averaging 4.9 yards per carry.

Vikings (2-2) at Bears (2-2), 1 p.m.

Key Stat

7: Number of touchdown passes by the Vikings' Randall Cunningham, one more than the six thrown by the Bears' Shane Matthews.   Stats matchup

Key Matchup

Bears cornerback Walt Harris vs. Vikings wide receiver Randy Moss, who got untracked against the Buccaneers in Week 4.

Player to Watch

Curtis Conway: The Bears receiver is on pace to catch 96 passes this season, with 24 receptions in the first four games.

Patriots (4-0) at Chiefs (2-2), 1 p.m.

Key Stat

9: Number of field goals by the Patriots' Adam Vinatieri, second-best in the league.   Stats matchup

Key Matchup

Patriots passing offense, which gains an average of 315 yards per game vs. Chiefs passing defense, which allows only 203 yards per game in the air.

Player to Watch

Terry Glenn: Patriots go-to receiver had career day against the Browns, catching 13 passes for 214 yards and a 54-yard TD.

Bengals (0-4) at Browns (0-4), 1 p.m.

Key Stat

2,043: Combined offensive yards by the Bengals and Browns in eight games, which is only 347 yards more than the Redskins have amassed in four games.  Stats matchup

Key Matchup

Bengals' passing attack with rookie Akili Smith at the helm, against the Browns' suspect secondary, which is allowing 280.8 passing yards per game, the fourth-worst average in the league.

Player to Watch

Akili Smith: Bengals QB makes his first start after appearing in three of the Bengals' first four games. His numbers look pretty poor (18-of-37 for 188 yards with no touchdowns and two interception), but the entire QB class of '99 is struggling.

Cowboys (3-0) at Eagles (0-4), 1 p.m.

Key Stat

-5: The Cowboys plus-minus ratio, tied for third-worst in the league.   Stats matchup

Key Matchup

Dallas' offensive line vs. the Eagles' defensive line, with the Eagles ranked 26th in rushing defense, allowing an average of 138.3 yards per game.

Player to Watch

Emmitt Smith: The Cowboys' workhorse running back has beaten on the Eagles in his career, with 419 carries for 1,967 yards and 12 touchdowns in 18 games against Philadelphia.

Steelers (2-2) at Bills (3-1), 1 p.m.

Key Stat

2: Number of times Steelers' QB Kordell Stewart was sacked for a safety in Week 4.   Stats matchup

Key Matchup

Steelers' defense, which as been keeping Pittsburgh in games, vs. the Bills' offense. Steelers have been giving up 16 points per game; Bills' offense has been averaging 20.

Player to Watch

Jay Riemersma: Bills tight end is playing an increasingly large role in the offense, with eight receptions for 136 yards and a touchdown.

Chargers (2-1) at Lions (2-1), 1 p.m.

Key Stat

3: Yards per carry allowed by San Diego's rush defense, the second-best average per carry in the league.   Stats matchup

Key Matchup

Lions' tall receivers, who are averaging a league-high 15.8 yards per catch, vs. the Chargers secondary, which is giving up 257.3 passing yards per game.

Player to Watch

Junior Seau: Seau is the leader of the Chargers defense, which essentially won Week 4's Kansas City game by forcing four turnovers and allowing only 3.2 yards per carry.

Giants (2-2) at Cardinals (1-3), 4:05 p.m.

Key Stat

74: Average rushing yards per game for the Giants, tied for the fourth-worst per-game average in the league.   Stats matchup

Key Matchup

Kerry Collins against Andre Wadsworth, Simeon Rice and the aggresive front seven of Arizona.

Player to Watch

Jake Plummer: Arizona's struggling field general has thrown twice as many interceptions (12) than the next-closest quarterbacks, Elvis Grbac and Trent Dilfer, who have six apiece.

Broncos (0-4) at Raiders (2-2), 4:15 p.m.

Key Stat

9,914: Career receiving yards for Tim Brown, who will become the 16th player in NFL history with 10,000 receiving yards with only 86 more yards.   Stats matchup

Key Matchup

Raiders' league-best ground attack (147.5 yards per game) vs. a struggling run defense (third-worst in the league with 143.5 yards per game), which is missing its best linebacker in injured John Mobley.

Player to Watch

Derek Loville: Always a capable backup, the Broncos running back will now have to prove that he can carry the load as a feature runner against the Raiders' run defense, which is second-best in the league, allowing only 58.5 yards per game.

Ravens (2-2) at Titans (3-1), 4:15 p.m.

Key Stat

36: Games played in Peter Boulware's young career, with sacks in an impressive 25 of those games. Boulware leads the league with six sacks so far in 1999.   Stats matchup

Key Matchup

Stoney Case -- an excellent scrambler -- against the pressuring defense of the Titans that could cause problems for a young quarterback.

Player to Watch

Errict Rhett: The third-leading rusher in the NFL was the second-best rusher on the Ravens coming into the season, but an injury to Priest Holmes allowed Rhett to seize a golden opportunity.

Dolphins (2-1) at Colts (2-1), 4:05 p.m.

Key Stat

0: Sacks allowed by the Colts in 1999, the only team in the NFL yet to give up a sack.   Stats matchup

Key Matchup

Dolphins run defense vs. the Colts' middle-of-the-pack running game, which is averaging 98.0 yards per game through three games.

Player to Watch

Marvin Harrison: Despite having played only three games, the Colts' Harrison leads the league with six receiving touchdowns, is tied for second with 28 receptions, and is fourth with 422 receiving yards.

Buccaneers (2-2) at Packers (2-1), 8:20 p.m.

Key Stat

29: The yardage in the Buccaneers longest run from scrimmage.   Stats matchup

Key Matchup

Packers' passing offense vs. Buccaneers defense, which allows only 161 yards per game.

Player to Watch

Antonio Freeman: In his fifth season, the Packers receiver is leading the team with 252 receiving yards.

Jaguars (3-1) at Jets (1-3), 9 p.m. Monday night

Key Stat

70.4: Mark Brunell's passer rating after four games, not up to preseason expectations.  Stats matchup

Key Matchup

Jets QB Rick Mirer vs. Jaguars cornerbacks Fernando Bryant and Aaron Beasley, who have four interceptions between them.

Player to Watch

Curtis Martin: Jets running back is fourth in the league in rushing, tied with the Jaguars' Jame Stewart with 310.