Tuesday’s primetime Peacock showdown with the San Antonio Spurs didn’t bear the result that Boston Celtics fans would’ve hoped. There was, however, plenty to feel good about coming out of the 125-116 loss to the hottest team in basketball.
Ron Harper Jr., against his brother, Dylan, nonetheless, scored a career-high 22 points on an efficient 8-11 from the field and 6-9 from deep. The two-way guard’s big night came on one where Boston was without reigning Sixth Man of the Year Payton Pritchard, and All-NBA forward Jaylen Brown (for the second half, at least).
He was more than ready to step up in his spots offensively, and give the Cs a much needed boost. The three-point shooting could be a real thing for the 25-year-old as he looks to find himself a spot in the Celtics’ rotation long term. With his six makes, he raised his three-point percentage nearly six points in a single outing. Those makes came in a multitude of ways too.
Harper Jr. made open ones, looks with the seven-foot-five-inch Victor Wembanyma closing out on him, and even a few on the move.
Not only did he shoot the ball well, but he got downhill a few times and scored at the rim. First, he hit former Celtics rim protector, Luke Kornet, with a deceleration move and finished through him, then later took a dribble handoff all the way to the cup after getting a step on Devin Vassell. Plus, he set Neemias Queta up for a potential alley-oop slam off of a late-shot-clock drive in the fourth quarter.
Harper Jr.’s aggressiveness and creativity were eye-opening, for sure, in this one.
Celtics Ron Harper Jr. career-high 22 PTS (8-11 FG, 6-9 3P, 100% TS), 3 REB, 2 AST, 0 TO in 33 minutes vs. Spurs https://t.co/t96Z10lFAX pic.twitter.com/vtpXDIc5cT
— Role Player Performances (@BenchHighlights) March 11, 2026
It’s really easy to sit here and point to the scoring as that’s the thing that jumps off the statsheet, but the impact didn’t stop there.
As the Celtics looked to make a late push down late in the fourth, they tasked Harper Jr. with defending Wembanyama in the halfcourt. His defense sparked a 6-0 run to bring Boston within five points with 1:43 to go.
He forced Wemby into a tough 13-foot fallaway jumper, came down and made a three, then drew an offensive foul on the following possession.
The fact that Joe Mazzulla trusted the 25-year-old, who was giving up a foot to the Spurs’ center, to try and stop him tells you all you need to know.
Harper Jr. has spent the last several months proving that he's ready for opportunities in Boston
It feels like the Celtics may have found something in Harper Jr. -- not just based off of Tuesday’s performance, either. He’s seen a significant bump in opportunity since Anfernee Simons headed to the Chicago Bulls in the Nikola Vucevic trade.
The day immediately after the deal, Harper Jr. got his first career start and nearly delivered a double-double with 11 points and nine rebounds against the Houston Rockets. Since then, he’s appeared in 11 contests for the Celtics.
Besides maybe the Feb. 8 loss to the New York Knicks, where everyone was awful if we’re being honest, is there a single game where you can say you were disappointed in what you saw from Harper Jr.?
The answer is probably no. Every time his number has been called he’s been ready for whatever the Celtics need from him.
Need a spot starter who can defend Kevin Durant for a few possessions?
Got it.
Need another with Jaylen Brown sitting out the first leg of a back-to-back in Phoenix?
Here’s eight points, five rebounds, and a loud block in 30 minutes.
Need a lift against the league’s hottest team with two of the team’s top scorers out?
You know the drill by now.
He's prepared himself for these moments by putting in the work since landing in Boston on a two-way deal back in October.
“Trust doesn't just come from what you do in the games,”Mazzulla explained at last month’s Celtics practice in Santa Monica. “You know, it comes from what you do in workouts. It comes from what you do in the film session. It comes from what you in Maine. It comes what you do on an optional day. If you're working one on one with your coach, like trust happens in so many ways.”
The commitment Harper Jr. has shown to honing his craft when no one is watching has given Boston every reason to convert his two-way contract to a standard deal when they deem the time right this season -- and then some.
His defensive versatility, promising jumpshot, and overall willingness to compete have him primed to be a part of this roster for years beyond this one.