Falk, bouncing back after missing the Apple Cup, completed 16 of 27 passes for 176 yards and two touchdowns.
Washington State started strong, scoring on its opening drive as Falk went 5-for-5, capping the march with a 31-yard touchdown pass to Jamal Morrow for a 7-0 lead.
The Cougars' second touchdown of the half came late in the second quarter. Falk moved WSU 71 yards on eight plays, finishing with a 25-yard touchdown pass to Gabe Marks with 1:10 left in the half.
Washington State completed the scoring on the final play of the half, Erik Powell booted a 25-yard field goal with no time remaining. It was Powell's second field goal of the game, as he kicked a 30-yarder earlier in the second quarter.
The Cougars' quick strike on their first touchdown, which took just over two minutes, may have forced Miami's thinking on its first drive. The Hurricanes drove to the WSU 4, but instead of trying a field goal on fourth down, opted to go for it. The result was a Brad Kaaya-to-Stacy Coley touchdown pass, tying the game at 7-7.
The Cougar defense was on its heels for most of the first quarter, but gained some momentum on Miami's second drive when Peyton Pelluer made a diving interception in the end zone. Then, following a quick fumble by WSU offense, the Cougar defense rallied by turning back the 'Canes on fourth down to regain the ball.
WSU's defense was dominant during the second quarter, as Miami had only 21 yards and one first down.
Late in the second quarter, Miami lost safety Rayshawn Jenkins, as he was ejected from the game for targeting.
Washington State outgained Miami 224-159 during the first half.
Miami gets the kickoff to start the third quarter.