"It feels good to get that monkey off my back," said Nick Rimando.
A diving save in the 94th minute, sealed the victory for RSL and tied the shutout record set by Kevin Hartman in 2012.
"A shutout is a shutout to me. It's the guys in front of me," said Rimando.
RSL (8-4-9) won the Rocky Mountain Cup by beating Colorado (8-7-6) in the first two games of the three-game, regular-season series, returning the Cup to Utah after a one year absence.
"Colorado threw everything at us, tonight, and the guys stood strong," said RSL Head Coach Jeff Cassar.
Real Salt Lake got on the board early when Javier Morales scored in the 14th minute for Salt Lake. The goal was created by Chris Wingert's hustle. Wingert won a 50/50 ball in Colorado's defensive end, got up and calmly found Morales inside the box.
Real Salt Lake played nearly the entire second half a man down after Aaron Maund was handed a red card in the 46th minute for taking down Colorado's Vicente Sanchez just outside the penalty area. However, a stellar defensive performance by Nat Borchers, Carlos Salcedo and Nick Rimando was enough to earn 3 points on the road.
"It was an unbelievable team effort, tonight," said Cassar. "I was really proud of how we stayed disciplined, compact and hard to break down."
Both Tony Beltran and Chris Wingert received a yellow card for time stalling on individual throw in opportunities. RSL will be without both for their next match against DC United due to yellow card accumulation.
The red card issued to Maund in the 46th minute marked the ninth time in the last 10 matches that a red card or PK was shown in an RSL match.