Week 15: Seahawks vs. Bills

When: Sunday, 1:05 p.m. PT, Rogers Centre, Toronto

Records: Seahawks 8-5 after last week’s 58-0 win over the Cardinals at CenturyLink Field; Bills 5-8 after last week’s 15-12 loss to the Rams at Ralph Wilson Stadium

TV: Fox (KCPQ/13 in the greater Seattle area), with Dick Stockton, John Lynch and Jennifer Hale

Radio: 710 ESPN and KIRO 97.3 FM, with Steve Raible, Warren Moon and Jen Mueller

Rest of the West: 49ers (9-3-1) at Patriots; Vikings at Rams (6-6-1); Lions at Cardinals (4-9)

Marshawn Lynch

Matchup microscope

The Bills’ defense vs. Seahawks running back Marshawn Lynch: It was the Bills who traded Lynch to the Seahawks in 2010. It is the Bills who will have to contend with the Beast Mode back on Sunday. The Bills were allowing an average of 163.7 rushing yards through their first nine games, but have macheted that to an average of 68.8 yards over the past four games. But that was against the Dolphins, Colts, Jaguars and Rams. None of those teams have a back as productive as Lynch has been this season, when he already has run for a career-high 1,266 yards; or since Week 9 last season, a 22-game span when he has run for a league-high 2,207 yards and scored 18 rushing touchdowns. His efforts against the Cardinals last week were stunning, especially considering that Lynch got his 128 yards and three TDs on only 11 carries. Then there’s that little former-team factor.

One to watch

The fourth quarter: The Seahawks have pulled out victories over the Packers (9-4) and Patriots (10-3) with fourth-quarter touchdowns, used a fourth-quarter TD against the Bears to eventually win in overtime and lost to the Lions and Dolphins after taking fourth-quarter leads only to have the defense allow game-winning TD drives. Not surprisingly, the Seahawks have score more points in the fourth (82) than any quarter other than the second (88). The Bills, meanwhile, have allowed 119 points in the fourth quarter – which is the fifth-highest total in the league behind the Lions (131), Eagles (124), Jaguars (124) and Redskins (123). They’ve lost games in the fourth quarter to the Rams, Titans, Patriots and Dolphins, and in an earlier loss to the Patriots they yielded 31 fourth-quarter points after the score was tied entering the final quarter.

Leodis McKelvin

Fun to watch

The Seahawks coverage units vs. Bills punt and kickoff returner Leodis McKelvin: Heath Farwell, come on down. Chris Maragos and Michael Robinson, you too. Containing McKelvin, who leads the league with an 18.7-yard average returning punts and is the only player in the league to rank among the Top 5 in punt- and kickoff-return average, will be an all hands-on-deck chore. It also will include punter Jon Ryan and kicker Steven Hauschka doing their things to give McKelvin as few chances to break a long one as possible. Impossible? McKelvin, after all, already has returned punts 88 and 79 yards for scores. The Seahawks’ potential trump card is that they are one of only three teams in the league that has not allowed a return of more than 40 yards in either category.

Russell Okung, Mario Williams, Breno Giacomini

One tough task

Seahawks tackles Russell Okung and Breno Giacomini vs. Bills defensive end Mario Williams: With the Bills’ defense stacked to stop Lynch, rookie QB Russell Wilson will need to continue making plays in the passing game. For that to continue, Okung and Giacomini will need to contain the player the Bills brought in during the offseason to bolster their defense, and especially the pass rush. After a slow start, Williams has five sacks in the past four games to give him 10.5 for the season and 42.5 for his career. The difference? The surgery Williams had on his left wrist during the Bills’ bye week. In the six games since the procedure, Williams has 21 tackles, seven sacks, seven QB hits, two passes defensed, two forced fumbles and a fumble recovery.

Worth noting

In the second half of the season, the Bills’ defense is allowing a league-low 3.1-yard per carry average. … Bills running back C.J. Spiller needs 56 rushing yards to reach 1,000 for the first time in his career, and is averaging a league-best 6.6 yards. … In three games against AFC teams, Wilson has completed 67 percent of his passes (49 of 73) for 705 yards, with seven touchdown passes and no interceptions, for a 130.2 passer rating. … While McKelvin ranks fifth in the league in kickoff-return average (28.3), the Seahawks’ Leon Washington ranks second (31.2). … Ryan is seventh in the league in net average (41.7) and fifth in punts inside the 20 (27). … Golden Tate and Sidney Rice lead the Seahawks with seven touchdown receptions. Tate has four in the past five games, Rice five in the past six games. … After forcing eight turnovers last week, the Seahawks are plus-8 in turnover differential. … Rookie middle linebacker Bobby Wagner leads the Seahawks with 108 tackles and linebacker Nick Barnett leads the Bills with 98.