Leon Jacobs‘ season is over. The Jaguars linebacker tore his ACL during Thursday’s loss to the Dolphins and will miss the rest of the 2020 campaign.

It’s a tough break for Jacobs, as the 24-year-old was establishing himself as a starter. After starting seven of his 14 games in 2019, the 2018 seventh-rounder had started two of his three appearances in 2020, compiling three tackles and one tackle for a loss. In 29 career games (12 starts), Jacobs has 66 tackles, two sacks, and one fumble recovery.

When Jacobs went down in the first quarter on Thursday, Cassius Marsh was the first choice to fill in at linebacker. The 28-year-old ended up playing 62-percent of Jacksonville’s defensive snaps, collecting three tackles.

ESPN’s Michael DiRocco passed along injury updates on some other notable Jaguars player. Wideout DJ Chark was sat out Thursday’s game with a chest/back injury, but he should return to the practice squad next week if his recent test results come back clean. Center Brandon Linder is also expected to return from a knee injury, while safety Andrew Wingard‘s core muscle injury isn’t as serious as initially thought.

Meanwhile, rookie kicker Brandon Wright suffered a groin injury during Thursday’s loss, forcing the Jaguars to start hunting around for some reinforcement. Wright was already filling in for starter Josh Lambo, who’s sitting on the IR with a hip injury. The 23-year-old Wright has connected on one of his two extra point tries this season.