The 2010 edition of the Rocky Mountain Cup played out as close and exciting as the previous three seasons. In the first leg, held September 27 at RSL's Rio Tinto Stadium, Real Salt Lake fielded a squad of mostly reserves in the middle of a busy stretch of their schedule including 2010–11 CONCACAF Champions League group stage matches. Coach Jason Kreis rested most of the starters in anticipation of an opportunity to clinch a berth in the CCL knockout round three days later. Conor Casey gave Colorado a 1–0 lead in the 36th minute. The result looked like it would hold until former Rapids defender Nat Borchers headed in a service from Andy Williams in the 93rd minute for the 1–1 draw. The second leg would finish in an even more exciting fashion. The teams returned to Dick's Sporting Goods Park for the final match of the regular season on October 23. Both teams had already clinched playoff spots. RSL needed a win or tie to have a chance at winning the Supporters' Shield. Colorado appeared to dash those hopes with a 16th-minute goal by Omar Cummings and a 51st-minute header by Conor Casey. Rapids fans were ready to celebrate their first Rocky Mountain Cup in 4 years while carrying a 2–0 lead into stoppage time. RSL forward Alvaro Saborio scored twice in stoppage time – first on a blocked clearance from Colorado keeper Matt Pickens in the 91st minute, and second on a penalty in the 95th minute after Drew Moor pulled RSL defender Jamison Olave down in the box on an RSL free kick. The resulting 2–2 draw gave RSL the Rocky Mountain Cup for the 4th consecutive season due to being the previous year's winner. Conditions after the match became ugly when several RSL players made obscene gestures towards the Colorado supporters' terrace and were consequently showered with beer cups and other projectiles. The draw would prove to be beneficial for Colorado, as it put them in the easier Eastern Conference bracket for the 2010 MLS Cup Playoffs in which Colorado won its first ever MLS Cup.