When Notre Dame’s swaggy senior point guard Matt Farrell stepped on the floor at Conte Forum on Saturday, Boston College fans might’ve forgotten his face.

It had been a little over a year since he came to the Heights, the place he once committed to before former coach Steve Donahue left, and torched the Eagles for 19 points, chirping at fans he said called him a traitor.

If BC had forgotten about Farrell, Farrell certainly hadn’t forgotten about BC.

He and the Irish’s senior forward Bonzie Colson, a New Bedford native who’s father was an assistant coach at BC under Al Skinner, talked about it before they made the trip. Colson is sidelined following foot surgery.

“I enjoy playing here,’’ Farrell said. “Me and Bonzie talk about it all the time. We love playing here and we really wanted to get this one for him.’’

It didn’t take long for Farrell to reintroduce himself.

From the time he drilled his first 3-pointer 3:33 into Notre Dame’s 84-67 win over BC, Farrell struck the match on his shooting hand and the Eagles couldn’t put it out.

He finished one 3-ball shy of the Atlantic Coast Conference record with 10 threes. The splashfest blew his previous career high of five threes out of the water. His nine consecutive made threes matched the ACC record set by BC’s Jordan Chatman a year ago against Virginia Tech. His career-high 37 points buried an Eagles team fighting to find enough late-season wins to slide into the NCAA Tournament.

Farrell tested his limits with pullups from straightaway and catch-and-shoots from the wing.

“After a couple of them, I was like, ‘All right, this is feeling real good.’ I kind of had the green light and started kind of pulling it from anywhere.’’

He didn’t get any objections from the Fighting Irish bench.

“That green light’s always on,’’ said coach Mike Brey.

Throw out his first two years at Notre Dame, when he was barely seeing the floor, and Farrell has averaged 22.5 points against BC.

After watching him hit his first five straight, the Eagles knew they had a a hot shooter on their hands.

“He was hot and he hit some shots,’’ said BC coach Jim Christian. “When you get a guy in rhythm like that and confidence like that, he hits tougher shots.’’

But when Farrell curled down the wing all by himself with six minutes left in the first half, everyone in the arena except his defender could see him sneaking his way to a sweet spot in front of the Eagles bench.

When he caught the kick-out pass from Fighting Irish center Rex Pflueger,the crowd behind BC’s bench let out a collective gut-punch groan and a choir worth “No!’’

He split the net with his sixth 3-pointer of the night, putting the Eagles in a 39-19 hole.

“Rex got in the lane, somebody set a fade screen for me on the wing right in front of the bench. Great play by Rex,’’ said Farrell. “We’ve got guys that know how to play, we move well without the ball, and when guys get in the lane below the free throw line, that’s really good for us and we exploited it really well today. Once he passed that to me, it was going up.’’

BC went into the locker room at halftime down, 46-30,its largest halftime deficit of the season.

Despite another machine-like performance from Jerome Robinson (29 points on 11-of-15 shooting, 5 of 8 from 3), the Eagles dropped to 16-11 overall, 6-8 in the ACC.

Robinson threw down 46 points at Notre Dame earlier this month. But the Irish didn’t change much about how they guarded him.

“The biggest thing was could we chase him off the 3-point line and make him a 2-point shooter,’’ Brey said. “I felt we could score enough against them to absorb twos from him. But if he’s going to make a bunch of threes, we’re in trouble. He is really a great guard.

“It’s a great story. He’s a heck of a guard. I don’t know how he got off Tobacco Road, but BC did a heck of a job getting him up here.’’

Ky Bowman missed nine of his 14 shots and finished with 13 points for BC. Chatman went 2 for 11, missing all seven of his long-range attempts.

The Eagles, who’ve won just one road game in the ACC and two overall, have a difficult path ahead with three of their final four games away from Conte to finish the regular season.

“I think they know,’’ Christian said. “They know what’s at stake. These guys understand what we’re trying to do and they understand the road to get there. It’s all about confidence.

“We’ve got to get some guys to play with more confidence right now. We’ve got a couple guys that aren’t playing as confident as they were. We’ve got to get their confidence back.’’

Julian Benbow can be reached at jbenbow@globe.com. Follow him on Twitter @julianbenbow