Five nuggets of knowledge about Week 3:
Seymour meets Roethlisberger again: The last time the Raiders and Steelers met -- a 35-3 Pittsburgh home win in November 2010 -- Richard Seymour earned a $25,000 fine for socking Ben Roethlisberger. After a Pittsburgh touchdown, Roethlisberger started celebrating and appeared to say something to Seymour. The defensive lineman turned and popped the quarterback in the face with his open right hand. Seymour was ejected, and the NFL later hit him in the wallet. It will be fun to see whether Roethlisberger steers clear of Seymour after the Steelers score.
A familiar foe for Manning: There will not be a team on the Denver Broncos' schedule this season that Peyton Manning will be more prepared to face than the Houston Texans, which visit Denver on Sunday. Manning used to play the Texans twice a year as a member of the Indianapolis Colts in the AFC South. Yes, the Texans' defense has changed some since Manning last played in 2010, but he still has a good feel for it, which will help Sunday.
Rivers is painting inside the numbers: The Atlanta Falcons will surely try to snuff out the middle of the field Sunday at San Diego. Because right now, Philip Rivers owns it. According to ESPN Stats & Information, the San Diego quarterback has completed 30 of 34 (88.2 percent) attempts inside the field numbers this season. All four of his touchdown passes have come between the numbers.
What will give in the Big Easy? Both the Kansas City Chiefs and New Orleans Saints go into Sunday's game in New Orleans a disappointing 0-2. A big reason why is that their defenses have betrayed them. The teams are tied for last in the NFL in scoring defense, both allowing 75 points through two games. It's the most points the Saints have allowed through their first two games since 1985; it’s more familiar territory for the Chiefs, which allowed 89 points through two games last season.
McGahee is a 100-yard star: Denver running back Willis McGahee has been one of the steadiest running backs in the league in his 10-year career. Sunday, he could become the NFL's active leader in 100-yard rushing games. He had 113 yards at Atlanta on Monday, his 31st career 100-yard game -- tying him with San Francisco's Frank Gore and St. Louis' Steven Jackson for the most 100-yard games for active players.