The San Francisco 49ers are resuming their training camp on Thursday at their SAP Performance Facility in Santa Clara, California, following a day off on Wednesday. However, before the practice began, the team announced nine roster moves.

San Francisco signed running back Ameer Abdullah, quarterback Carter Bradley, wide receiver Marquez Callaway and wide receiver Andy Isabella.

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Abdullah, 32, earned All-Big Ten honors thrice at Nebraska before the Detroit Lions took him in the second round of the 2015 NFL draft. In his 10 seasons split between Detroit, Minnesota, Carolina and Las Vegas, he’s rushed for 1,994 yards and eight touchdowns on 4.0 yards per carry while adding an addition 1,468 yards and 11 scores on 203 receptions.

Bradley, 25, spent his collegiate career between Toledo (2018-21) and South Alabama (2022-23), earning All-Sun Belt honors in 2022. He signed with the Las Vegas Raiders as an undrafted free agent last year and spent most of his rookie season on their practice squad.

Callaway, 27, was an All-SEC receiver at Tennessee before signing with the New Orleans Saints as an undrafted free agent in 2020. In five seasons, he’s caught 83 passes for 1,069 yards and seven touchdowns, but he hasn’t recorded a reception since 2022.

Isabella, 28, was a star at UMass, earning All-American honors his final season. The Arizona Cardinals took him in the second round of the 2019 NFL draft, and between his time with the Cardinals, Baltimore Ravens, Buffalo Bills and Pittsburgh Steelers, he’s caught 33 passes for 447 yards and three touchdowns.

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To make room for these four, San Francisco released Equanimeous St. Brown and waived offensive lineman Sebastian Gutierrez, wide receiver Malik Knowles and safety Jaylen Mahoney.

St. Brown, 28, signed with the 49ers just last week after spending his first seven seasons in the NFL with the Green Bay Packers, Chicago Bears and New Orleans Saints. He was fighting for a depth spot.

Gutierrez, 27, spent time with the 49ers in 2023 and 2024 but only played three offensive snaps for the team in his two separate stints. He was also fighting for a depth or practice squad spot.

Knowles, 24, earned All-Big 12 honors twice at Kansas State before signing with the Minnesota Vikings as an undrafted free agent. He signed with 49ers in June.

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Mahoney, 24, signed with San Francisco last year as an undrafted free agent out of Vanderbilt. He appeared in three games, playing 30 snaps (all on special teams) and recording three tackles.

San Francisco also activated offensive lineman Ben Bartch from the non-football injury list. He’s expected to contend for a starting spot on the offensive line now that he’s back at camp.

More 49ers: Free agent signing has thoroughly impressed OC Klay Kubiak early in training camp

This article originally appeared on Niners Wire: 49ers sign four players, release four and activate one from NFI