Central Michigan (1-1) led 31-3 at halftime after Rush completed 21 of 29 attempts for 301 yards and the defense held Monmouth (0-2) to minus-3 yards rushing and forced punts on each of the Hawks' first four drives.
Mark Chapman opened the scoring for the Chippewas with a 7-yard run in the first quarter, his only carry of the game. Rush, who holds the Chippewas' single-game passing record with 493 yards against Western Kentucky last season, threw all three of his TD passes in the second quarter - a 17-yarder to Corey Willis and a 1-yard pass to Joe Bacci.
The Hawks' defense stiffened in the second half, and Zach Welch scored the only points of the second half with a 7-yard run.
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