North Carolina came into the offseason with obvious scoring help on the way. Terrence Brown arrives after putting up 19.9 points per game at Utah, while Cameron Fens, if eligible, and Neo Avdalas both scored in double figures at their previous stops.
What UNC didn’t appear to have was a clean answer for Seth Trimble’s defensive role. Trimble spent four seasons shaping the Tar Heels’ identity on that end, but the numbers tell a different story than the reputation he carried. And if one advanced metric is to be believed, North Carolina may have found something better than a replacement.
The metric in question is Defensive RAPM from CBBAnalytics, short for Regularized Adjusted Plus-Minus. In plain English, it tries to isolate how much a player helps his team defensively while accounting for everyone else on the floor.
That matters because raw points allowed can be misleading. A player can look strong in the box score while being propped up by elite teammates.
Defensive RAPM is built to cut through that noise.
By that measure, Avdalas stands out immediately. Among Division I players who logged at least 10 games and 10 minutes per game last season, he finished 68th out of 3,924 players.
That’s a strong result on its own, but the context makes it even more interesting. Virginia Tech went 19-13 and 8-10 in the conference, and the Hokies ranked 74th nationally in adjusted defensive efficiency according to KenPom.
Avdalas started and played in 31 of their 32 games, averaging 31.7 minutes a night, so this wasn’t a case of a defender getting protected by limited usage. He was in the middle of almost everything Virginia Tech did on that end.
For UNC, that matters. Avdalas may not arrive with Brown’s scoring reputation or volume, but the defensive numbers point to a player who could help the Tar Heels on both sides of the ball.
The separation between Avdalas and the rest of North Carolina’s newcomers is huge. Every other newcomer lands outside the top 600.
That group includes Fens, the seven-foot graduate center from South Dakota who was named First Team All-Defense in the Summit League. On paper, Fens looks like the kind of player who should anchor a defense at the rim.
RAPM is less impressed, though mid-major data is often harder to read because of the smaller sample and the lower level of competition.
The box-score indicators paint a different picture. Among the transfers, Angelo Brizzi of Buffalo leads the group in steal percentage at 3.6%, with Matt Able next at 3.3%. Avdalas sits near the bottom at 1.1%.
That disconnect is exactly why RAPM can be useful. Steals capture one kind of defensive event, but they don’t tell the whole story.
A player can rack up steals by gambling in passing lanes without consistently improving the defense as a whole. Avdalas’ profile suggests the opposite: steady, disciplined defense that doesn’t rely on splashy plays.
The supporting numbers back that up. He committed just 1.3 fouls per game across 31.7 minutes, which works out to about 1.65 per 40 minutes.
That was the lowest foul rate on Virginia Tech’s roster among players who appeared in at least 10 games and averaged at least 10 minutes. He also blocked shots at a 1.9% rate, a number that is modest overall but respectable for a perimeter player.
Low steals, low fouls, and some shot-blocking from the wing point to a defender who stays connected without constantly reaching or gambling.
That could be especially useful for North Carolina, where the scoring attention is going to be everywhere else. A player who can defend cleanly without forcing turnovers gives Michael Malone another versatile option.
Trimble, meanwhile, built his defensive reputation through hustle plays: diving for loose balls, pressuring full court, battling through screens, and bothering ballhandlers. But the RAPM data doesn’t match that image.
Trimble finished with a -2.0 RAPM, the lowest on the Tar Heels last season under the guidelines used here. That puts him 2.0 points per 100 possessions below the Division I average.
If that sounds like a metric with some bite to it, there’s more evidence in its favor. A look at every All-Defensive player from the Big Ten, Big 12, SEC, ACC and Big East last season showed all of them landing on the right side of the graph, with above-average RAPM.
The lone outlier was Trimble. Avdalas, in the middle of that same graph, came in at 3.6.
There are limits here, of course. One college season is still a pretty small sample for a stat built on lineup data.
Avdalas being 68th nationally last season doesn’t mean he’ll be the 68th-best defender in the country next season. He’s moving into a new system, and his role could change.
Still, the contrast is hard to ignore. Trimble spent four years as the face of UNC’s defensive edge, but the numbers say he was 2.0 points per 100 possessions below the Division I average. Avdalas arrives at plus 3.6, in the same range as All-Defensive selections from every major conference.
That’s a swing of more than five points per 100 possessions at a spot North Carolina was expected to be weaker at this season.
If Avdalas’ defensive RAPM is a real sign of what he brings, the Tar Heels may have added a perimeter stopper almost by accident. UNC built a roster that can score. It may have quietly landed a defender who can change possessions, too.
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