Sources: Sean Sweeney Departs Dallas Mavericks for San Antonio Spurs, More Coaching Staff Intel

Sean Sweeney is departing the Dallas Mavericks to join the San Antonio Spurs as associate head coach under head coach Mitch Johnson, DallasHoopsJournal.com has confirmed.

Sweeney, who joined the Mavericks in 2021, was not looking to leave Dallas for anything other than a head coaching role but was not offered a contract extension after the team’s 2024 NBA Finals run. He advanced to the second round of interviews with the Phoenix Suns this offseason and was a finalist for the Detroit Pistons’ head coaching job last summer.

Sweeney was widely respected within the Mavericks organization. Luka Dončić pushed for him to join the Slovenian national team staff for Olympic qualification efforts. He also traveled to Duke to work directly with Dereck Lively II before last season as part of the team’s player development strategy.

Internally, several within the organization who have spoken with DallasHoopsJournal.com view the failure to extend Sweeney and other members of the coaching staff after the Finals as a costly organizational misstep. Despite his value, the door remained open for his move to San Antonio.

Jay Triano Replaces Alex Jensen on the Dallas Mavericks’ Coaching Staff

In recent days, Sweeney’s departure has drawn league-wide attention. Around the NBA, several figures have questioned Dallas’ approach to staffing after multiple assistants were left without contract extensions following the Finals run. With respected figures like Sweeney departing and others nearing free agency, the Mavericks now face pressure to stabilize and reshape their coaching staff.

While Dallas does need to replace Sweeney, the team has replaced Alex Jensen, who departed to become the head coach of the University of Utah. DallasHoopsJournal.com previously confirmed that veteran coach Jay Triano will be one of the team’s lead assistant coaches.

Triano was hired by the Mavericks earlier this month after serving in associate head and assistant coaching roles with the Sacramento Kings. His extensive résumé includes stints as head coach of the Toronto Raptors and interim head coach of the Phoenix Suns. He also led the Canadian men’s national team at the 2000 Olympics and remains the first Canadian-born head coach in NBA history.

Multiple sources told DallasHoopsJournal.com that the Mavericks’ coaching staff worked throughout the 2024–25 season amid uncertainty due to the lack of contract extensions following the NBA Finals. That environment played a key role in Jensen’s departure.

The coaching staff that began the 2024–25 campaign already looked significantly different before the Mavericks finished the season. Marko Milič exited shortly after the Dončić trade, and Darrell Armstrong remains on administrative leave following a February arrest.

There have also been indications that consultant Frank Vogel could be considered for an assistant coach role, though nothing has progressed significantly on that front.

Jared Dudley Drawing Interest from Rival Teams for Promotion

Jared Dudley, who remains under contract through the 2025–26 season, is drawing serious interest from both the Cleveland Cavaliers and Memphis Grizzlies for elevated assistant roles, DallasHoopsJournal.com has learned. Both teams are exploring bench promotions, and Dudley’s combination of player credibility and coaching presence has made him a strong candidate. He played for Cavaliers head coach Kenny Atkinson during his stint with the Brooklyn Nets in the 2018-19 season.

All signs indicate that Dudley would prefer to remain in Dallas, especially given the vacancy created by Sean Sweeney’s departure. However, he currently serves as the Mavericks’ No. 3 assistant, which allows him to interview with other teams for a promotion. He joined Jason Kidd’s coaching staff in 2021 shortly after retiring from a 14-year NBA playing career.

Dudley’s long-standing relationships with Kidd and Anthony Davis, dating back to their time with the Los Angeles Lakers—as well as his on-court work with Kyrie Irving and Klay Thompson during his coaching tenure—make him a respected and influential figure on the Mavericks’ bench. Internally, he’s viewed as a trusted voice for veterans and a steady communicator across the roster.

Other Dallas Mavericks Coaching Staff Developments

Player development coach God Shammgod, who originally joined the team in 2019 before general manager Nico Harrison’s arrival, also did not receive a contract extension after the Finals. Like Sweeney, Shammgod is soon free to pursue opportunities elsewhere.

Shammgod is drawing interest from other teams, including the Orlando Magic, sources tell DallasHoopsJournal.com. Considering Shammgod has a close relationship with Irving, it’s additionally notable that he could depart the organization.

As it stands, there will be further changes to the Mavericks’ coaching staff ahead of the upcoming season, with a need to replace Sweeney and potentially others.

Further on the player development front, it has been reported by various outlets that shooting coach Mike Penberthy, who worked with Kidd in Los Angeles, was hired by the Mavericks. However, sources have indicated to DallasHoopsJournal.com that his hiring has not yet been confirmed by Dallas.

Penberthy is a respected shooting coach with NBA experience dating back to 2014. He began his coaching career with the Minnesota Timberwolves, later holding similar roles with the New Orleans Pelicans and Lakers, where he contributed to the team’s 2020 NBA championship as a shooting specialist. He also worked as a shooting coach and pro scout with the Denver Nuggets beginning in 2022.

Josh Broghamer to Serve as Head Coach of the Summer Mavs

With attention shifting to Cooper Flagg’s arrival in Dallas, DallasHoopsJournal.com has also confirmed that assistant coach Josh Broghamer will serve as the Mavericks’ head coach for Summer League in Las Vegas. Dudley had coached the Summer Mavs in recent years.

Broghamer joined the Dallas Mavericks as an assistant coach in August 2023. He previously spent five seasons with the Cleveland Cavaliers (2018–2023), where he held multiple roles, including director of scouting and player development, advance scout, and assistant video coordinator.

Broghamer began his NBA career in the video room with the Phoenix Suns during the 2013–14 season before joining the Milwaukee Bucks in 2014. He served on Kidd’s coaching staff in Milwaukee for four seasons, working as a video coordinator and later as an assistant coach.

In addition to his NBA background, Broghamer has coached at U16 USA Basketball camps and participated in the Adidas EuroCamp in Treviso, Italy, further contributing to his player development credentials.