Xavier Tillman’s presence on the Boston Celtics’ 2024 championship roster was easy to overlook, buried at the end of Joe Mazzulla’s bench with just 7.0 minutes per game. After a frustrating season marred by knee issues and poor shooting, the 26-year-old big man is back, leaner, healthier, and hungry for a bigger role in 2025-26. Acquired from Memphis in 2024, Tillman transformed his body this offseason, dropping 12 pounds and fixing his knee with a stem cell injection. With Kristaps Porzingis gone and Al Horford now in Golden State, Boston’s frontcourt is wide open for Tillman, Neemias Queta, and Luka Garza to seize meaningful minutes. For Celtics fans on Facebook, Tillman’s comeback story is electric—can he rise from obscurity to anchor the champs? Let’s dive into his struggles, offseason overhaul, and the path to a breakout season.
Boston Celtics’ Xavier Tillman plays against the Milwaukee Bucks during the second half of an NBA basketball game, Monday, Oct. 28, 2024, in Boston. (AP Photo/Michael Dwyer)
Last Season’s Struggles: A Forgotten Champion
Xavier Tillman’s 2024-25 season with the Celtics was a stark contrast to his impactful role with the Memphis Grizzlies, where he played 207 games (53 starts) over four seasons, averaging 6.8 points and 4.6 rebounds. Traded to Boston at the 2024 deadline, he appeared in just 33 games, logging a career-low 7.0 minutes, 1.0 points, and 1.3 rebounds per game (per Basketball-Reference). His 5-for-18 shooting (27.8%) in his first five games and recurring knee swelling—described as a “balloon” after scrimmages—sidelined him from the rotation. Tillman played only seven of Boston’s final 35 games, totaling 36 minutes post-All-Star break, with his lone playoff action in a 38-point Game 6 loss to the Knicks.
“It was very hard,” Tillman told reporters at training camp on September 30, 2025. “I was wanting to play, contribute, but my knee would just swell up after one scrimmage.” Unlike bench pieces like Sam Hauser (8.9 PPG), Tillman’s role shrank as Mazzulla rested starters late in the season. Fans on X noted the frustration: “Tillman was a ghost last year—champion ring but barely touched the floor!” (@CelticsPride). His 25.2% career three-point shooting and injury woes didn’t help, but he used the season to learn from Porzingis, Horford, and Luke Kornet.
Offseason Overhaul: A Leaner, Healthier Tillman
Tillman attacked his weaknesses this summer with surgical precision. A stem cell injection in his knee last spring eliminated “flare-ups” and minimized swelling, restoring his mobility. He hired a personal chef, adopting a “boring” diet of chicken, salmon, and rice, shedding 12 pounds to enhance agility. “I feel healthy, leaner, and more confident,” Tillman said post-practice. He also worked tirelessly on his shooting, aiming to boost his dismal 25.2% three-point mark. “You rip out so many shots you can damn near close your eyes and make it,” he quipped, signaling newfound confidence.
His transformation draws parallels to past Celtics who reinvented themselves, like Grant Williams (37.7% 3PT in 2021-22). Tillman’s Memphis tenure—53 starts, 44.3% FG—shows he can be a two-way force, rebounding (4.6 RPG) and defending (1.0 SPG, 0.8 BPG). As The Athletic’s Jared Weiss noted, “Tillman’s new body and shot could make him Boston’s X-factor in the frontcourt.” Reddit’s r/bostonceltics is buzzing: “Tillman dropping 12 pounds and fixing his knee? He’s ready to ball!” (u/GreenRunsDeep). Training camp, starting September 30, will showcase his revamped game.
The Frontcourt Opportunity: Tillman, Queta, and Garza
Boston’s frontcourt is unproven after losing Porzingis (traded to OKC) and Horford (signed with Golden State). With Luke Kornet also gone, Tillman, Neemias Queta, and Luka Garza are poised to compete for minutes alongside Chris Boucher. “Me, Neemias, and Luka—we have a really great opportunity to play meaningful minutes for a great ball club,” Tillman said. Queta (5.5 PPG, 4.6 RPG in 28 games) brings rim protection, while Garza (4.0 PPG, 41.7% 3PT) offers stretch-big potential. Boucher (6.4 PPG, 4.1 RPG) adds veteran hustle but lacks consistency.
Tillman’s edge lies in his versatility. At 6’8”, 245 pounds (post-weight loss), he can guard 3-5, set screens, and crash boards. His 1.4 assist-to-turnover ratio in Memphis highlights playmaking, ideal for Boston’s pass-heavy system (26.9 APG, 6th in 2024-25). His chemistry with Garza, a high school and college rival, is a bonus. “That’s my guy,” Tillman said. “Sam Hauser calls us the buffaloes—we compete every day.” Their 20-40 minute daily workouts push both to elevate. ESPN’s Tim Bontemps projects Tillman at 15-20 MPG if his shooting improves to 33% from three. Fans on X are hyped: “Tillman and Garza as the buffalo duo? Frontcourt’s got grit!” (@CelticsFanatic).
Challenges Ahead: Shooting, Role, and a Stacked East
Tillman’s biggest hurdle is his shooting. His 25.2% career three-point percentage (0.4 attempts per game) limits spacing in a system reliant on Jayson Tatum (30.1 PPG, 37% 3PT) and Jaylen Brown (23.0 PPG, 35% 3PT). Defenses will sag off him, clogging drives for Derrick White (15.2 PPG). Hitting 33-35% on 1-2 threes per game could secure a rotation spot. His knee, while improved, remains a concern after 2024-25’s swelling issues. Mazzulla’s tight rotations—favoring Tatum, Brown, and Jrue Holiday (12.5 PPG)—mean Tillman must prove reliability early.
The East is brutal: Milwaukee (Giannis, 30.4 PPG), Philadelphia (Embiid, Paul George), and New York (Brunson, 28.7 PPG) loom large. Boston’s 64-18 record and +600 title odds (FanDuel) set a high bar, but their frontcourt depth (14th in rebounding, 43.7 RPG) needs Tillman’s hustle. His 2023-24 Grizzlies stats (6.0 PPG, 4.6 RPG in 20.6 MPG) suggest he can deliver if given 15-20 minutes. As NBC Sports Boston’s Chris Forsberg noted, “Tillman’s a sleeper—versatile, tough, and ready to step up.” Preseason (October 7 vs. Charlotte) will test his new shot and role.
The Bigger Picture: A Prove-It Season for Tillman
Tillman’s redemption arc aligns with Boston’s repeat-or-bust mentality. With a $190M payroll (per Spotrac), the Celtics need cost-controlled depth (Tillman’s $2.2M cap hit) to complement stars. His Memphis experience—53 starts, 44.3% FG—shows he can anchor a second unit, especially with Garza and Queta. If he averages 6-8 points, 5 rebounds, and 33% from three, he could lock a long-term role or a bigger contract elsewhere by 2027. His “buffalo” bond with Garza adds grit, echoing Boston’s 2024 title DNA.
The Celtics’ early schedule—Bucks, Sixers, Knicks in October—demands frontcourt production. Tillman’s growth could mirror Daniel Theis’ 2020-21 role (9.6 PPG, 5.5 RPG). Fans on Reddit are optimistic: “Tillman’s new body and Garza’s shooting? Frontcourt’s sneaky deep!” (u/CelticsDynasty). If he thrives, he’s a cornerstone for Banner 19; if not, he risks another bench exile. Training camp will reveal if his offseason work translates.
Xavier Tillman’s quiet 2024-25 season with the Celtics—7.0 MPG, 1.0 PPG—belied his potential, but a transformed body, healed knee, and revamped shot signal a breakout. With Porzingis and Horford gone, Tillman, Queta, and Garza have a golden opportunity to anchor Boston’s frontcourt. His versatility and “buffalo” grit with Garza could fuel a repeat title run, but shooting and consistency are make-or-break. For Celtics fans on Facebook, Tillman’s comeback is a storyline to watch—can he rise from forgotten champ to rotation star? Drop your predictions below: Will Tillman crack 15 MPG? Let’s go for Banner 19!