For the most part, the Dolphins are set in their depth chart for the 2024 season with many starters returning or free agents settling in. That being said, Miami is working through a few position battles as we inch our way towards eventual roster cuts. 
According to Mike Florio of NBC Sports, one such battle focuses on who comes off the bench for the lead man behind center. Head coach Mike McDaniel claims that backup quarterbacks Mike White and Skylar Thompson are “neck and neck” in their battle to be the primary relief behind Tua Tagovailoa. Last year, White emerged as the winner of what McDaniel called a “pretty close race” with Thompson.
White impressed in seven starts in replacement duty during his first two seasons with the Jets. Miami signed him to a two-year contract, but with Tagovailoa staying completely healthy in 2023, White only appeared in garbage time. Thompson saw two starts in replacement duty for Tagovailoa two years ago, appearing in seven games as a seventh-round rookie and nearly leading the team to a playoff win over the Bills in a Wild Card start. Signs point to White likely retaining the job, but McDaniel insists that a bit of intrigue remains in the competition.
On the defensive line, free agent addition Calais Campbell and Zach Sieler have settled in as the starting ends. A battle has developed on the inside, though, between Benito Jones and Teair Tart, per Barry Jackson and Omar Kelly of the Miami Herald. Jones returns to South Beach after two years in Detroit, where he started 15 games last season. Despite earning the starting job last year, Jones graded out horribly, according to Pro Football Focus (subscription required), ranking as the league’s 124th best interior defender out of 130 graded at the position.
Tart graded out better in nine starts for the Titans last year. Thanks to an impressive pass rush grade, Tart ranked 85th, per PFF. Both players graded out better as pass rushers than run defenders, so it will be interesting to see how this battle plays out over the remainder of the preseason.
A number of interesting stories have developed at linebacker, as well. First, while Jaelan Phillips and Bradley Chubb continue to work their way back from major injuries, Quinton Bell has reportedly “been a revelation” at camp, per Jackson. After spending the 2023 season on the team’s practice squad, the outside linebacker stands a chance at playing real time while the Dolphins wait for Phillips and Chubb to return.
At inside linebacker, Jackson notes that Miami rosters four veterans at the position, along with Cam Brown who serves as a key special teams contributor. That leaves former third-round pick Channing Tindall on the roster bubble as we near roster cuts. Tindall has appeared in 33 games over his first two years in the league but only played nine defensive snaps in 2022 and 12 in 2023. Much more is expected of a third-round pick, and with the current veteran presence blocking his path to more playing time, Tindall’s chances of remaining on the roster seem slim.