COMMERCE CITY, Colo. - Danny Mwanga scored a 66th-minute equalizer after Colorado's Conor Casey converted a penalty shot in the 63d minute Saturday night, to lift the Union to a 1-1 tie with the Rapids.

The result allowed Colorado (4-3-7) to match a Major League Soccer record with its sixth consecutive tie.

Casey's goal came after the Rapids defense blocked a Jordan Harvey shot and Colorado quickly pushed the ball deep into the Union zone. Pablo Mastroeni was leveled in the scoring area, setting up the penalty kick. Casey faked Union keeper Faryd Mondragon to his knees to score.

The lead was short-lived. Three minutes later, Mwanga took a pass from Harvey and beat goalkeeper Matt Pickens with a low drive into the left side of the net for his fourth goal of the season.

Mwanga had a potential game-winning shot blocked just outside the crease in the 90th minute.

The Union (6-3-3) earlier missed a scoring opportunity when Sebastien Le Toux threaded the needle in the 17th minute to get a pass to Jack McInerney in the heart of the Colorado defense. McInerney punched a shot that barely cleared the crossbar.