The Celtics are waiving Luis, Michael Scotto of USA Today reports.
Luis had a two-way contract with Boston, but he was unable to maintain his grip on the roster during training camp. The St. John's product went undrafted in the 2025 NBA Draft, and he'll hope to either find a home elsewhere ahead of the new year or perhaps join the G League's Maine Celtics otherwise.
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Celtics' RJ Luis: Plays in preseason opener
Rotowire
Luis (knee) generated four points (2-2 FG) in three minutes of Wednesday's 121-103 preseason win over the Grizzlies.
Luis didn't appear in a Summer League game due to left knee soreness, but he's since been traded from Utah to Boston and recovered from the injury. The undrafted rookie was effective in limited action, but he'll have a tough path to regular-season minutes with the Celtics.
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Celtics' RJ Luis: Being shipped to Boston
Rotowire
The Celtics are acquiring Luis (knee) and two future second-round picks from the Jazz in exchange for Georges Niang, Shams Charania of ESPN reports.
Luis, who went undrafted in the 2025 NBA Draft, offers Boston some swingman depth but likely doesn't have a clear pathway to fantasy relevance to open the 2025-26 season. The St. John's product was unable to participate in the Summer League due to a knee injury, and it's unclear if the issue will carry into training camp this fall. Luis has a two-way contract as well, so most of his playing time figures to come in the G League during his rookie year.
Luis (knee) is out for Friday's Summer League game against the Bulls, Andy Larsen of The Salt Lake Tribune reports.
Luis will remain sidelined for a seventh straight contest due to left knee soreness, and it doesn't appear as though he'll be able to make his professional debut during the Summer League at this point. With Utah missing several key players Friday, Elijah Harkless and Max Abmas should be in line for a boost in ball-handling duties.
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Jazz's RJ Luis: Won't play Wednesday
Rotowire
Luis (knee) won't play in Wednesday's Summer League game against the Wizards, Tony Jones of The Athletic reports.
Luis will remain on the shelf for a sixth straight contest due to left knee soreness. The St. John's product has not yet made his professional debut, and it's unknown how close he is to returning to the floor for the Jazz.
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Jazz's RJ Luis: Still out against Spurs
Rotowire
Luis (knee) won't play in Monday's Summer League game against the Spurs, Ben Anderson of KSL News Salt Lake City reports.
Left knee soreness will cost Luis a fourth consecutive game Monday. The St. John's product has still yet to make his Summer League debut, with his next opportunity to suit up coming Wednesday against the Wizards.
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Jazz's RJ Luis: Remaining out Sunday
Rotowire
Luis (knee) won't play in Sunday's Summer League game against the Warriors, Andy Larsen of The Salt Lake Tribune reports.
Luis will remain on the shelf due to left knee soreness, and he has yet to suit up in Summer League. Ace Bailey (hip) and Walter Clayton (hamstring) have also been ruled out, with their next chance to play coming Monday against the Spurs.
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Jazz's RJ Luis: Remains out with knee soreness
Rotowire
Luis (knee) is out for Friday's Summer League game against the Hornets, Ben Anderson of KSL News Salt Lake City reports.
Luis hasn't played yet in the Summer League due to left knee soreness, and his professional debut will have to wait at least one more game. The St. John's product's next chance to suit up comes Sunday against the Warriors.
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Jazz's RJ Luis: Unavailable Tuesday
Rotowire
Luis (knee) has been ruled out for Tuesday's Summer League matchup against the Thunder, Ben Anderson of KSL News Salt Lake City reports.
Luis will remain out Tuesday while he continues to deal with left knee soreness. His next opportunity to make his Summer League debut will come Friday against the Hornets.
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Jazz's RJ Luis: Sidelined Monday
Rotowire
Luis (knee) has been ruled out for Monday's Summer League matchup against the Grizzlies, Andy Larsen of The Salt Lake Tribune reports.
Luis won't make his professional debut Monday due to left knee soreness. The wing signed a two-way contract with the Jazz after going undrafted in the 2025 NBA Draft. He starred at St. John's last season, averaging 18.2 points, 7.2 rebounds, 2.0 assists and 1.4 steals in 31.7 minutes per game while shooting 43.9 percent from the field and 33.6 percent from three over 35 appearances. His next chance to suit up will come Tuesday against the Thunder.
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Jazz's RJ Luis: Lands in Utah
Rotowire
Luis agreed to a two-way contract with the Jazz on Thursday, Shams Charania of ESPN reports.
After going unselected in the 2025 NBA Draft, Luis, the reigning Big East Player of the Year, was able to secure on the Jazz's three two-way spots. During his junior season at St. John's in 2024-25, Luis averaged 18.2 points, 7.2 rebounds, 2.0 assists and 1.4 steals in 31.7 minutes per contest while shooting 43.9 percent from the field and 33.6 percent from beyond the arc across 35 games last season. The wing brings an NBA-ready frame and physicality but must reduce his turnovers and make significant strides with his jump shot.
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