The 88-82 double-overtime win over West Virginia at the Charleston Civic Center was by far the best achievement for Capel in his short tenure here.
His Sooners showed a lot against the Mountaineers: Big shots, big stops, big pride.
There were several times during regulation in which West Virginia, a team that's shooting over 50 percent this season, got hot and threatened to pull away from the Sooners.
But Capel and his squad never let it happen. Though they trailed most of the second half, they kept scratching and clawing (and even elbowing).
In fact, it may have been Longar Longar's elbow that ignited Oklahoma late in the second half. Though some may criticize it due to Longar's experience with the elbow in the past (calling Bobby Knight anyone?), it was an act of toughness that Longar and the Sooners need to show.
His team responded.
Trailing 58-50 with 6:00 left in regulation, the Sooners went on a 14-2 tear over the next four minutes to build a four-point lead.
Then, after falling behind by five early in the first OT, Oklahoma stepped up again.
Not only did the defense hold WVU scoreless the final 1:35 of the period, but Tony Crocker's 3-pointer to tie the game with eight seconds left showed some clutch ability.
After falling behind four points in the final frame, the rest of the game belonged to the Sooners.
It was a battle of wills – and OU won it.
Could this have happened last year? It never did.
In fact, it hasn't happened yet this year as Oklahoma, with one exception, has struggled mightily on the road.
But this time around, the Sooners dug in and continued to fight the Mountaineers.
Look for a hero if you want, but you'll be hard-pressed to have a definitive answer.
Crocker's shot in the first overtime was huge, but this was no doubt a team effort.
Austin Johnson's confidence is building and he exploded against the Mountaineers for 13 points and nine assists. Tell Capel that Johnson will give him those numbers every night and he'll probably give you a hug.
Longar, who played only five first-half minutes thanks to foul trouble, scored a game-high 22 points.
David Godbold, who made some clutch free throws throughout, had 18 points and seven boards.
Then there was Blake Griffin, who is slowly but surely molding himself into the player that everyone hopes he can become.
Against a very rugged yet versatile Mountaineer frontline, Griffin came through with possibly his finest performance of the season – 18 points and 14 rebounds.
And the defense, something that may get overlooked but is heavily stressed by Capel, held the Mountaineers nearly 10 percent below their season average. WVU shot just 20.8 percent from 3-point range, a 20 percent dip in its season average.
Another show of grit: Oklahoma won the rebounding battle 45-36.
But the most gratifying stat: It was a road win against a quality opponent.
WVU entered the game 10-1 with an eight-game win streak and ranked 23rd in the country. This win is huge now, but could be even bigger come Selection Sunday in March.
But let's not put the cart before the horse. The team that's won three straight against Arkansas, Gonzaga and WVU is the same one that lost at home to Stephen F. Austin.
In other words, you're probably never as good or as bad as you think.
But West Virginia is a good team. Close to a very good team. And Oklahoma beat the Mountaineers in their home state in front of a national TV audience.
That means the Sooners could very well be on their way to becoming a good team, maybe even a very good one. Capel said as much in the post-game press conference.
But good or bad, the Sooners got a huge win on Saturday, one that Capel can finally hang his hat on.