Freshman Josh Scott helped break open a tight game by scoring 13 of his 20 points in the second half, and No. 23 Colorado handed Air Force its first loss of the season with an 89-74 victory on Sunday night.
Andre Roberson had 18 points and 13 rebounds, and Spencer Dinwiddie and Askia Booker added 15 points apiece for Colorado (5-0), which is off to its best start since also opening 5-0 in 1989-90.
The Buffaloes improved to 9-1 at home against Air Force (5-1), which fell one win shy of matching its only 6-0 start in 1982-83.
Michael Lyons scored 20 points for the Falcons, who fell to 2-76 when playing ranked opponents. Todd Fletcher matched his career high with 18 points.