The Lobos took a 2-0 lead then trailed the rest of regulation as Santa Clara (4-1) went on an 11-0 run to establish a lead they would never relinquish.
Tony Snell paced UNM with 18 points and Drew Gordon added a double-double with 11 points and 10 rebounds but the Lobos were unable to deal with the Broncos Kevin Foster and Evan Roquemore, who combined to scored 26 and 24 points and nine three pointers between the two of them, primarily in the crucial first half.
UNM again had trouble shooting, going just 9-of-28 (32%) in the first half and 3-of-8 (36%) from the three point line in the first half compared to Santa Clara, who hit 7-of-11 three pointers (64%) and went 12-of-22 (55%) from the field in the first half to grab a 35-26 halftime lead.
New Mexico started the second half on an 8-0 run, tying the game at 35-35 with 15:32 left in the game but the Broncos were able to pull back into the lead. UNM tied the ball at 41-41 and again at 46-46 but were never able to grab the lead.
The Lobos improved their shooting in the second half, hitting 8-of-17 (47%) from the field, including 5-of-10 (50%) from three point land and outscored the Broncos 41-32 in the second half to force overtime. UNM outrebounded Santa Clara 34-29, with a 20-18 advantage in defensive rebounding. But the Lobos had three players foul out – Snell, A.J. Hardeman and Demetrius Walker.
The fouls thinned UNM in the paint even more as Cameron Bairstow played just five minutes, sitting the game out with an illness.
Greenwood scored a career high at UNM with 14 points in his second career start. Jamal Fenton came off the bench to add nine points, going 2-for-2 from the field, including a three pointer, and a perfect 4-for-4 from the free throw line. Walker added eight points off the bench.