However, a Richard Roby trey on CU's next possession helped keep Radford at bay from that point on.
Roby led all scorers with 18 points, and led Colorado with six boards, as well.
Freshman Marcus King-Stockton drew the start at center in place of Julius Ashby, who is out at least eight weeks with a torn tendon suffered in Tuesday's win over UMKC. King-Stockton had two points and five rebounds in 21 minutes, while center Lamont Arrington came off the bench to score six points in 18 minutes.
Ashby's absence meant CU coach Ricardo Patton was using combinations of players he hadn't in previous game, something which contributed to CU not being able to beat Radford more decisively.
The Buffs held Radford to 38 percent shooting, while hitting 50 percent themselves.
The win — CU's third in five days — moved Colorado to 6-2. The Highlanders fell to 5-4. Up next for the Buffs is Gardner-Webb at home Dec. 28.
It's certainly to soon to start kicking wins. The game ended up in the right column. But we certainly didn't play our best basketball.
Q: What did you want to see more?
RP: I have to take, probably, most of the blame. In a game like this, Radford had suspended two of their better players, and it's Christmas time so (I) wanted to give guys an opportunity to play that haven't played a lot. I've just got to remember that this is not T-Ball, where everybody gets to play.
I put some bad combinations out there. We had a 17-point lead at one time and five different guys out there. By the time they came out, I think we were up 10. I have to take the blame for that and get rid of that soft spot for wanting guys to play that work hard in practice every day.
It wasn't a good basketball game. It would be easy for me to rip guys tonight, but, you know, we've played a pretty good schedule. There were some guys that came off the bench against Cal that really helped us win the ballgame. For every bad we've done, we've done some good too.
The one thing about it, you're never as good as you think you are after a win and you're never as bad as you think you are after a loss. We looked bad tonight at times, but there were times when we got up on a team by 17. We had to do something right to be in that situation.
Q: Have you started to find combinations of guys you like, or are you still working on it?
Right now with Julius Ashby being out, it's back to searching to get the right combinations on the floor. We had settled in on a pretty good rotation when Julius was still in the lineup.
(Tonight), I saw a lot of what won't work. But that's good. There's some benefit in that too.
Q: Does the win streak help your team's confidence going into a tougher part of the season?
I don't know that the streak has as much to do with it as much as our guys realize we've played a good schedule. That'll help us more than anything else.
I thought we came out with a little more intensity to start (than against UMKC). But basically we just have to learn to get up for everybody, and get better as a team every game no matter what it says against the other team's chest.
Q: Is it easy to lose focus when you're playing a team that's outmatched like tonight?
We can't use that as an excuse. We've just got to go out and play every team like it's a Kansas or Oklahoma State.
On the rotation
From one to eight we've got guys who we know what we're going to get out of them. I think we're still looking for some guys to step up. Starting with Richmond and Utah, those will be pretty good tests for us. I'm pretty sure we'll know our rotation by then.
On not blowing out Radford
Some guys on the team have to get the mentality of smashing people. We see Oklahoma State beating people by 50 points. This team tonight, I'm not trying to take anything away from them, but we should have won by more than (16) points.
CU junior center Julius Ashby will be out at least eight weeks – and possibly the rest of the season – with a torn tendon in his foot he suffered in the first half vs. UMKC. What will Colorado miss in Ashby's absence? The junior was ninth in the Big 12 in rebounds (7.4) and fourth in blocked shots (1.71) through Dec. 22. …Speaking of statistics, freshman Richard Roby went into Thursday's game ninth in the league in scoring (16.3), 10th in field goal percentage (.488) and fourth in steals (2.14). As a team, CU went into the game first in the Big 12 and fifth in the country in blocked shots (7 per game).