The Boston Celtics have signed Ron Harper Jr. to a full-time NBA contract, per ESPN’s Shams Charania.
Boston was obligated to make an addition to the roster on Saturday, April 4, following the expiration of Charles Bassey’s second 10-day deal.
“The Boston Celtics are signing two-way wing Ron Harper Jr. to a new two-year deal, agent Drew Gross of WME Basketball tells ESPN. Harper has played a key Celtics rotation role at times this season while spending time starring for their Maine G League affiliate,” Charania reported.
Harper Jr has played in 26 regular-season games for the Celtics during the 2025-26 campaign. He’s averaging 3.4 points and 1.6 assists per night, shooting the rock at a 39.8% from the field and 34.4% from deep.
The Celtics now have a solid wing rotation as we come to the end of the regular season. Harper Jr will join Jaylen Brown, Jayson Tatum, rookie Hugo Gonzalez, Jordan Walsh and Baylor Scheierman as Joe Mazzulla’s options at the three and four spots.
Details regarding Harper Jr’s contract haven’t yet been made public. However, it’s likely there will be an option for next season in his deal.
Harper Jr. Is The latest Maine Celtics Graduate
Since Brad Stevens moved into the Celtics front office, Boston has made great use of their G League development system. Harper Jr joins a growing list of talent that began their tenures with the franchise in Maine before earning a call-up to the main roster.
Neemias Queta, Sam Hauser, Luke Kornet, Amari Williams and Max Shulga are just some of the recent success stories from Boston’s developmental system. Hauser is undoubtedly the shining example, developing from an undrafted rookie into an NBA champion sharpshooter.
Harper has already earned minutes in Mazzulla’s rotation this season. As such, there’s a chance we see him for spells before the end of the regular season. However, once the playoffs begin, he will likely remain on the bench, providing depth in case of injury or fatigue.
Celtics Still Have An Open Roster Spot
Boston still has another open roster spot, which it will need to fill before the start of the playoffs.
As such, Stevens will likely be scouring the free agency market in the hunt for a veteran contributor who can be a valuable presence in the locker room and potentially provide minutes in a pinch.
The Celtics already have enough young talent with long-term upside. Therefore, the team could use the final roster spot to add some veteran know-how, or to take a closer look at someone Stevens would consider re-signing heading into next season.
Given Boston’s recent moves to get under the luxury tax, it’s unlikely that the 15th and final roster spot will be anything other than a pro-rata minimum deal.
Nevertheless, there should be a string of talent willing to take Stevens up on the offer, especially as the Celtics are among the favorites in the Eastern Conference to make a push for the NBA Finals.
For now, though, Boston has locked in its rotation. Any new additions will simply be for depth, which isn’t a bad thing.
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