كتب : Omar Zaazou
Monterrey, who lost 2-1 to hosts Raja Casablanca in the quarter-finals, totally outclassed the African champions to condemn them to a five-goal festival, surpassing fellow Mexicans Pachuca who walloped the Reds 4-2 in 2008.
The win is the CONCACAF Cup holders' second against Ahli in 12 months, having also beaten the Reds in last year's third-place playoff in Japan.
Monterrey went ahead after just three minutes through Neri Cardozo before being quickly pegged back by Emad Meteb five minutes later.
The Mexicans ruthlessly replied to Ahli's leveler via further three first-half goals from Cesar Delgado, Leobardo Lopez and a Humberto Suazo spot-kick.
Delgado then completed the rout with another goal five minutes past the hour-mark to become the competition’s all-time leading goalscorer.
Total control
After seeing an early header from Meteb flow narrowly wide, Ahli were on the back foot after just three minutes with Cardozo capitalizing on shambolic Reds' defending to slot home the opener past Sherif Ekrami.