Atonio Mafi Bio
Atonio Mafi (born October 20, 2000) is an American professional football guard for the Las Vegas Raiders of the National Football League (NFL). Standing 6 ft 3 in and listed at around 330 lb, he plays the interior offensive line and wears jersey number 56. He played college football for the UCLA Bruins and entered the league after being selected in the fifth round (144th overall) of the 2023 NFL Draft by the New England Patriots.
After stops in New England and Indianapolis, Mafi joined the Las Vegas Raiders and continues to develop as an interior blocker at the professional level. His journey from a heavily recruited defensive lineman to an NFL offensive guard has shaped his reputation as a hardworking, position-flexible player.
Early Life and Background
Atonio Mafi was born on October 20, 2000, in San Mateo, California. He is of Tongan descent and grew up in the Bay Area, where he was exposed to team sports from an early age. Before taking up football, Mafi played rugby, a background that helped build his physicality and contact skills.
He attended Junípero Serra High School in San Mateo, where he played on both sides of the ball. He was ranked as a three-star prospect and considered a top-130 player in California by ESPN. His high school honors included Central Coast Section Co-Offensive Player of the Year, West Catholic Athletic League Most Valuable Player, and first-team All-CIF recognition.
Mafi originally committed to play college football at California before flipping his commitment to UCLA. His size, athleticism, and competitive toughness made him one of the more intriguing in-state recruits in his class.
Path to American Football
Although he grew up playing rugby, Mafi transitioned fully to football in high school and quickly developed into a two-way standout. At Junípero Serra, his ability to play both offense and defense drew attention from several college programs along the Pacific Coast.
Recruited primarily as a defensive lineman, Mafi arrived at UCLA in 2018 and was immediately placed on a structured plan to reshape his body and conditioning. Coaches challenged him to lose weight in order to earn playing time, and he responded by adjusting his diet and training habits.
That willingness to adapt marked the beginning of his transition from a run-stopping nose tackle into a more versatile lineman. By his senior season, Mafi had moved to the offensive side of the ball, setting the stage for his professional future as a guard.
Atonio Mafi Career
Early Career (2018–2020)
Mafi began his UCLA career on the defensive line in 2018. Measured at 411 pounds when he first enrolled, he was told he needed to drop weight in order to compete. He slimmed down to 390 pounds by the start of his first season and went on to win the starting nose tackle job, becoming the only true freshman starter on the Bruins’ defensive front. He appeared in 12 games with nine starts and recorded 16 tackles.
By the 2019 season, Mafi had trimmed down to 357 pounds and produced 28 tackles, four tackles for loss, one sack, and one forced fumble across 12 games, five of which he started. In 2020, he shifted to the offensive line and appeared in seven games in a reserve role, beginning the position change that would define his NFL future.
UCLA Breakthrough (2021–2022)
In 2021, Mafi continued to adjust to the offensive line, playing 12 games and starting three. He earned a reputation for his combination of size, strength, and movement skills, even as he continued to refine his technique at guard.
Entering his senior year in 2022 at 377 pounds, Mafi was again told he needed to drop weight to maximize his opportunity. He committed to a diet and exercise program and reported to the season at 340 pounds. He went on to start all 13 games and was named Second-team All-Pac-12 for his performance. Across his UCLA career, he appeared in 56 games, tying the school record for games played.
New England Patriots (2023–2024)
Projected as a fourth-to-sixth round pick ahead of the 2023 NFL Draft, Mafi was selected by the New England Patriots with the 144th overall pick in the fifth round. He spent his rookie season with the organization, working to translate his college experience into a professional role on the offensive line.
Mafi was waived by the Patriots on August 27, 2024, as the team shaped its final roster. His time in New England gave him his first full NFL training camp and regular-season exposure.
Indianapolis Colts (2024–2025)
On August 29, 2024, Mafi was signed to the Indianapolis Colts practice squad, giving him an opportunity to continue his development within a new offensive system. He was promoted to the active roster on November 30, 2024, before being waived on December 23 and returning to the practice squad.
On January 6, 2025, Mafi signed a reserve/future contract with Indianapolis, signaling the team’s intent to keep him in the organization. He was waived by the Colts on May 9, 2025, opening the door for his next opportunity.
Las Vegas Raiders Era (2025–Present)
On July 22, 2025, Mafi signed with the Las Vegas Raiders and joined the team’s offseason program and training camp. He was waived on August 26 as part of final roster cuts and quickly re-signed to the practice squad the following day.
On November 17, 2025, Mafi was signed to the Raiders’ active roster, giving him another chance to compete for game action. Wearing number 56, he continues to work within the Raiders’ interior offensive line group.
Driving Style and Strengths
Although Mafi is not a race car driver, his professional equivalent of “driving style” reflects his blocking approach. He leverages his large frame and low pad level to anchor against power rushers, while showing enough mobility to reach second-level targets in the run game. His rugby background and defensive-line experience give him a physical, finisher’s mentality in tight quarters.
Notable Events and Milestones
Key milestones in Mafi’s career include his Second-team All-Pac-12 selection in 2022, tying the UCLA record for games played with 56 appearances, and being drafted in the fifth round of the 2023 NFL Draft. His repeated roster moves across three NFL organizations also reflect his persistence and readiness to compete whenever called upon.
Atonio Mafi Career Stats
As of the 2025 season, Atonio Mafi has appeared in 23 regular-season NFL games with 7 starts across his time with the New England Patriots, Indianapolis Colts, and Las Vegas Raiders. His role has steadily grown from practice squad contributor to active-roster interior lineman.
NFL Regular Season Highlights
Mafi’s first NFL regular-season action came with New England after being selected in the 2023 Draft. He later earned his first active-roster promotion with Indianapolis in November 2024, a milestone that reflected his development and special-teams value.
His most recent opportunity came with the Las Vegas Raiders, where he was added to the active roster in November 2025, continuing his push for a longer-term role on an NFL offensive line.
College and Award Recognition
At UCLA, Mafi earned Second-team All-Pac-12 honors in 2022 and tied the school record with 56 career games played. His career arc from 411-pound freshman to 340-pound senior captain is one of the more dramatic transformations in recent program history.
Atonio Mafi Family
Family Background and Heritage
Atonio Mafi is of Tongan descent and grew up in San Mateo, California. His Pacific Islander heritage and Bay Area upbringing shaped his early athletic path, particularly his introduction to rugby before football. Specific details about his parents and siblings are not publicly confirmed in available sources.
Personal Life
Publicly verified information about Mafi’s personal life, marital status, or children is limited. He is known to maintain an active presence on social media under his playing nickname “56 Mafia.” Beyond his professional career, he is recognized for his disciplined approach to conditioning and nutrition.
2025 Season Performance
The 2025 season has been a transitional year for Atonio Mafi. After being waived by the Indianapolis Colts in May, he signed with the Las Vegas Raiders in late July and entered training camp competing for an interior offensive line role. He was waived during final cuts in late August and immediately re-signed to the Raiders’ practice squad.
His season turned a corner on November 17, when he was promoted back to the Raiders’ active roster. That move gave him another opportunity to contribute on game days and continue building his professional resume across multiple organizations.
Looking ahead, Mafi’s outlook centers on locking down a stable role within the Raiders’ offensive line room. With his combination of size, positional versatility, and proven weight-management discipline, he remains a developmental prospect with starting upside if he can sustain his conditioning and technical progress.