Fellow senior Frankie Luvu, playing in front of his family for the first time, snagged a game-clinching interception as Washington State finished 7-0 at home for the first time ever.
With a 5-1 conference record, Stanford is at the top of the Pac-12 North with No. 12 Washington and No. 25 Washington State right behind in the standings.
Stanford - playing in the snow for the first time since a 1936 game at Columbia in NY - had three consecutive three-and-out possessions after Okereke's interception.
Washington State drove to Stanford's 13 on its first possession of the second half, but had to settle for Erik Powell's 41-yard field goal and a 17-7 lead.
The Cardinal had only nine first downs and 198 yards of total offense.
Falk engineered a six-play, 71-yard drive to take the lead and the highlight play was not the 12-yard touchdown pass to Renard Bell that capped the drive, but rather an eight-yard dumpoff that came a few snaps earlier.
The Cardinal offense looked atrocious last week without Love available, barely escaping Corvallis with a win against a struggling Oregon State club.
Love (ankle) will play in Saturday's contest against Washington State, Tom Fitzgerald of the San Francisco Chronicle reports. He busted out for a 52-yard touchdown run early in the second quarter which accounted for nearly the entirety of his rushing output against the Cougars.
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