TEMPE, Ariz. -- Mike Nixon returned one of his three interceptions for a touchdown and blocked a punt to lead Arizona State past outmatched Idaho State 50-3 Saturday night.
The senior linebacker became the first Sun Devil with three picks in a game in 20 years.
Thomas Weber tied an Arizona State record with five field goals, all inside of 30 yards.
Danny Sullivan, in his first start after two seasons as Rudy Carpenter's backup, completed 13 of 25 passes for 165 yards in 2 1/2 quarters for the Sun Devils.
The Bengals, who play at Oklahoma next Saturday, committed five turnovers and managed just 37 yards, zero in the first half.
Jarrett Huk kicked a 54-yard field goal for the lone score for Idaho State (0-1), coming off a 1-11 season in the Football Championship Subdivision, formerly NCAA Division I-AA.
The 37 yards, which included a 32-yard loss on Idaho State's final play, was the fourth-fewest allowed by Arizona State in school history.
Nixon, who had five career interceptions before Saturday night, became the first with three in a game for the Sun Devils since Nathan LaDuke did it against Houston on Sept. 23, 1989.
Nixon's second pick came at the Idaho State 34 and he ran untouched to the end zone to put Arizona State up 20-0 with 2:12 left in the first half.
The Sun Devils' defense stuffed the Bengals again on Idaho State's next possession, then Nixon burst up the middle to block Jon Vanderwielen's punt. Arizona State's first blocked punt in three seasons set up Weber's 27-yard field goal that made it 23-0 as the half ended.
Weber's five field goals were one shy of the Pac-10 record. He missed a 27-yarder in the first half.
True freshman Brock Osweiler relieved Sullivan halfway through the third quarter and later threw 16 yards to a diving Brian Motsumoto for a touchdown early in the fourth quarter. It was Motsumoto's first career catch.
Brandon McGee intercepted Blum's underthrown pass and returned it 11 yards to the Bengals 40 to set up the only touchdown scored by ASU's first-team offense.
Arizona State was pushed back to third-and-21 at its 49, but Sullivan ran 17 yards, then threw seven yards to Gerell Robinson to convert a fourth-and-4 situation. Dimitri Nance's 9-yard run on the first play of the second quarter made it 10-0.
Arizona State coach Dennis Erickson said "five or six" players missed the game for violating team rules.