Oregon State's Mannion to have knee surgery

Oregon State's enthusiasm over its 4-0 start has been tempered by the news that starting quarterback Sean Mannion will undergo knee surgery.

Beavers head coach Mike Riley told a group of reporters on Monday afternoon that the sophomore will be out an undisclosed amount of time. According to the Statesman Journal, the injury occured when Mannion was making a handoff during the Beavers' 19-6 win over Washington State on Saturday. He played the entire game against the Cougars but threw three interceptions in the contest.

Riley has the Beavers off to a 4-0 start, and the aerial attack led by Mannion has been a major reason for the team's success. He ranks sixth in the nation at 339.5 passing yards per game and was particularly strong in the team's wins over Wisconsin, UCLA and Arizona.

In four games this fall Mannion has thrown for 1,358 yards and seven touchdowns.

Junior Cody Vaz will likely take over the starting job in Corvallis. He hasn't played since his freshman year of 2010, when he completed just six of his 17 attempts for 48 yards.

Email dave.miller@nationalfootballpost.com or follow me on Twitter at Miller_Dave

Upcoming Games

Nov 29th, 1:00 PM

Carolina +3.5 -110

Minnesota -3.5 -110

@

Nov 29th, 1:00 PM

Tennessee +3 -120

Indianapolis -3 -120

@

Nov 29th, 1:00 PM

Arizona -1.5 -110

New England +1.5 -110

@

Nov 29th, 1:00 PM

Cleveland -6.5 -110

Jacksonville +6.5 -110

@

Nov 29th, 1:00 PM

Miami -7 -115

NY Jets +7 -115

@

Nov 29th, 1:00 PM

Las Vegas -3 -110

Atlanta +3 -110

@

Nov 29th, 1:00 PM

NY Giants -6 -110

Cincinnati +6 -110

@

Nov 29th, 1:00 PM

LA Chargers +5 -110

Buffalo -5 -110

@

Nov 29th, 1:15 PM

Baltimore +4.5 -110

Pittsburgh -4.5 -110

@

Nov 29th, 4:05 PM

San Francisco +6.5 -110

LA Rams -6.5 -110

@

Nov 29th, 4:05 PM

New Orleans -6 -110

Denver +6 -110

@

Nov 29th, 4:25 PM

Kansas City -3.5 -110

Tampa Bay +3.5 -110

@

Nov 29th, 8:20 PM

Chicago +8.5 -110

Green Bay -8.5 -110

@

Nov 30th, 8:15 PM

Seattle -5 -110

Philadelphia +5 -110

@

Dec 3rd, 8:20 PM

Dallas +7 -110

Baltimore -7 -110

@

Dec 6th, 1:00 PM

Cleveland +3 -120

Tennessee -3 -120

@

Dec 6th, 1:00 PM

Indianapolis -3.5 -110

Houston +3.5 -110

@

Dec 6th, 1:00 PM

Detroit +5.5 -105

Chicago -5.5 -105

@

Dec 6th, 1:00 PM

Jacksonville +9 -110

Minnesota -9 -110

@

Dec 6th, 1:00 PM

Las Vegas -8 -110

NY Jets +8 -110

@

Dec 6th, 1:00 PM

New Orleans -3.5 -120

Atlanta +3.5 -120

@

Dec 6th, 1:00 PM

Washington +10.5 -110

Pittsburgh -10.5 -110

@

Dec 6th, 1:00 PM

Cincinnati +10.5 -110

Miami -10.5 -110

@

Dec 6th, 4:05 PM

NY Giants +7.5 -110

Seattle -7.5 -110

@

Dec 6th, 4:05 PM

LA Rams -1.5 -111

Arizona +1.5 -111

@

Dec 6th, 4:25 PM

New England +2.5 -110

LA Chargers -2.5 -110

@

Dec 6th, 4:25 PM

Philadelphia +7 -110

Green Bay -7 -110

@

Dec 6th, 8:20 PM

Denver +13 -110

Kansas City -13 -110

@