Oakland, CA (Sports Network) - Led by a resurgent Peyton Manning, the Denver Broncos are on a roll. And now the AFC West champs are eyeing a potential first-round bye following their eighth straight win. Manning tallied his 5,000th career completion and threw for 310 yards and a touchdown in the Broncos' 26-13 win over the Oakland Raiders. Manning joined Brett Favre (6,400) as the only NFL quarterbacks with 5,000-plus completions. Manning, who completed 26-of-36 passes, has tossed 19 touchdowns and seven interceptions during his torrid eight-game stretch for Denver (10-3), which is in the midst of its longest winning streak since the 1998 squad began the year 13-0. The Broncos were tied with the New England Patriots and Baltimore Ravens for the No. 2 seed in the AFC coming in, but sat fourth in the standings based on tiebreakers. Denver visits Baltimore next Sunday. Knowshon Moreno finished with 119 yards rushing and a score on a career-high 32 carries, while Eric Decker recorded eight receptions for 88 yards in the win. Oakland, meanwhile, is headed in the complete opposite direction. Carson Palmer had 273 yards through the air on 19-of-30 efficiency with two scores and an interception for the Raiders (3-10), who suffered their sixth straight defeat. Raiders head coach and former Broncos defensive coordinator Dennis Allen returned to the sidelines Thursday following the death of his father, Grady Allen. The former NFL linebacker was originally hospitalized last week with heart problems and passed away at the age of 66 on Tuesday. Darren McFadden returned after missing the previous four games with an injured ankle and finished with 52 yards on the ground -- 36 coming on the first play of the second half -- on 11 totes. He added a touchdown reception.