Monterrey claimed a fifth CONCACAF Champions League title after edging Mexican rivals Club America 1-0 in the final.
Rogelio Funes Mori was the hero, with the Mexico international's ninth-minute goal proving the difference at Estadio BBVA in Guadalupe on Thursday.
America defender Sebastian Caceres failed to deal with a ball into the penalty area, his whiffled clearance gifting Mori and Monterrey the early opener.
Former Tottenham striker Victor Janssen went close to doubling Monterrey's lead with 10 minutes of regulation remaining after rounding goalkeeper Guillermo Ochoa, but his effort was cleared off the line.
There were incredibly 15 minutes of stoppage time and America came close to dramatically equalising in the 101st minute when Federico Vinas rattled the crossbar in a goal-mouth scramble.
Monterrey, though, held on for their second Champions League trophy in three years.