Johann Bilsborough Rumors

Southwest Notes: Mavs, Aldama, Popovich, Pelicans

May 8th, 2025 at 8:48am CST by Luke Adams

Mavericks general manager Nico Harrison is making major changes to the club’s health and performance team, according to reports from Marc Stein (Twitter link), Mike Curtis of The Dallas Morning News and Tim MacMahon of ESPN. Those changes include parting ways head athletic trainer Dionne Calhoun and athletic performance director Keith Belton, among others.

As MacMahon details, Calhoun has spent over two decades with the Mavericks and had been the team’s head athletic trainer since 2019. He was one of the last holdovers from the staff of former health and performance director Casey Smith, who was let go in 2023.

MacMahon previously published a lengthy story about the turmoil within Dallas’ health and performance director, as we relayed last month. That story included details on a “loud, heated confrontation” between Belton and director of player health and performance Johann Bilsborough over how the team was handling Dereck Lively‘s ankle injury. That incident spurred an HR investigation, according to MacMahon, who says Bilsborough remains employed by the team.

Here’s more from around the Southwest:

Damichael Cole of The Memphis Commercial Appeal previews Santi Aldama‘s upcoming restricted free agency, noting that the presence of solid frontcourt options like Jaren Jackson Jr., Brandon Clarke, and Zach Edey will give the Grizzlies some leverage in their negotiations with Aldama. However, the 24-year-old Spaniard has steadily improved during his four years in Memphis and his offensive skill set is an asset, Cole notes, so the team won’t necessarily be able to bring him back at a bargain rate.
In a feature story for ESPN.com, Baxter Holmes takes an in-depth look at the “unparalleled” legacy that Gregg Popovich will leave behind after coaching the Spurs for the better part of three decades. Holmes spoke to Steve Kerr, Jerry Colangelo, Mike Krzyzewski, and Adam Silver, among others, about the impact that Popovich had during his long run as the head coach in San Antonio.
Ahead of Monday’s draft lottery, William Guillory of The Athletic explores what the Pelicans‘ draft options will look like if they don’t have a shot at Cooper Flagg at No. 1 overall. Guillory breaks down some hypothetical scenarios in which New Orleans lands V.J. Edgecombe (at No. 4), Kon Knueppel (No. 5), and Jeremiah Fears (No. 7).

Mavs Rumors: Health/Performance Team, Doncic, Dumont, Harrison, Kidd

April 22nd, 2025 at 4:01pm CST by Luke Adams

Within an in-depth story focused on the changes made with the Mavericks‘ health and performance department in recent years, Tim MacMahon of ESPN shares several details that reflect poorly on the team’s current management, starting with the firing of longtime director of health and performance Casey Smith in 2023.

As MacMahon explains, several sources believe general manager Nico Harrison fired Smith – who was close with longtime Mavs star Dirk Nowitzki as well as Luka Doncic – because he wasn’t enough of a yes-man.

“(Harrison) was 100 percent threatened by him,” a team source told MacMahon. “He’s going to show that I’m in charge and nobody else can question that.”

MacMahon also reports that the relationship between new director of player health and performance Johann Bilsborough and athletic performance director Keith Belton has been frosty, writing that Bilsborough doesn’t respect Belton’s acumen. Belton was hired by the Mavs first, with Bilsborough later hired as his superior.

A January disagreement over how Dereck Lively‘s foot injury was being handled led to a “loud, heated confrontation” between the two men, according to MacMahon, who hears from one source that the altercation was “coming for a long time.”

Here’s more on the Mavs:

Both MacMahon and Grant Afseth of Dallas Hoops Journal (Substack link) say the calf strain Doncic sustained on Christmas Day was a source of major tension between the Mavs and the guard’s camp. The team believed that Doncic could be back in two to three weeks and Harrison thought the injury was related to Doncic’s conditioning, whereas the star guard’s camp was adamant that he needed to sit out for six weeks to fully recover and believed the injury stemmed from the fact that he returned too soon from a previous heel issue. “That deepened the divide,” a source told ESPN.
In the wake of the Doncic trade, Mavericks governor Patrick Dumont no longer views Harrison as having “irreproachable basketball expertise,” sources tell Tim Cato of DLLS Sports (subscription required). Dumont has been especially frustrated that Harrison either didn’t foresee or didn’t better prepare him for the extreme negative reaction to the trade from the fan base, Cato adds.
Within the same story, Cato cites sources who say that Jason Kidd “resented” the Doncic trade, even though the Mavs head coach shared some of Harrison’s frustrations about Doncic’s work habits. Kidd felt he was being asked to reinvent a roster and a system that had previously been built around Doncic, Cato explains, noting that the coach’s frustration was a factor in his decision to skip a mandatory press conference in February on the same day Doncic made his Lakers debut.