Raiders offensive coordinator Greg Olson said the team let Warren go Sunday because he didn't meet Oakland's "fitness expectations," Josh Schrock of NBC Sports Bay Area reports.

EDGE Analysis

Warren checked in around 260 pounds in late June, up from the 247 pounds he weighed at the 2018 combine. Schrock also reported that the 23-year-old "looked bulkier on Saturday," which seemingly was the deciding factor for Oakland's decision to sign James Butler and waive Warren.

Warren was let go by the Raiders on Sunday, Michael Gehlken of the Las Vegas Review-Journal reports.

EDGE Analysis

Warren had such promise heading into the offseason, as general manager Mike Mayock even said he was excited to see the young running back in practice. Warren made a bid for the 53-man roster as an undrafted rookie in 2018 after he led the NFL with 292 rushing yards during the preseason, ultimately being stashed on injured reserve with a knee injury instead. In a corresponding move, the team signed fellow running back James Butler.

Warren is up to around 260 pounds, Scott Bair of NBC Sports Bay Area reports.

EDGE Analysis

Warren apparently has put on weight since last year's combine, where he ran a 4.69 40-yard dash while checking in at 6-foot-2, 247 pounds. His new weight likely makes him the largest halfback in the league, which could prove useful for blocking on special teams. With Josh Jacobs, Jalen Richard and Doug Martin all expected to have spots on the 53-man roster, Warren and 205-pound scatback DeAndre Washington seem to be competing for the possibility of a single job. Undrafted out of Texas last year, Warren ran for a league-high 292 yards during preseason and then spent the entire regular season on injured reserve with a knee issue. There hasn't been any report of the injury impacting his participation in Oakland's offseason program.

Raiders general manager Mike Mayock said he's excited to see Warren on the practice field this summer, Vic Tafur of The Athletic reports.

EDGE Analysis

Warren made a bid for the 53-man roster as an undrafted rookie in 2018, leading the NFL with 292 rushing yards during the preseason. Oakland stashed him on injured reserve with a knee injury before Week 1, with the 246-pound bruiser then getting surgery for his nagging injury. Warren should be healthy for the start of the offseason program, where he'll begin building his case for a spot on the 2019 roster. If nothing else, his size hints at potential for short-yardage situations and/or special teams.

The Raiders placed Warren on injured reserve due to a knee injury, Matt Schneidman of The San Jose Mercury News reports.

EDGE Analysis

General manager Reggie McKenzie touched on Warren's health Saturday, saying the undrafted rookie running back had been playing through a knee issue that was "wearing on him." Consequently, Warren will undergo season-ending surgery to alleviate the concern.

The Raiders have placed Warren (undisclosed) on injured reserve, Scott Bair of NBC Sports Bay Area reports.

EDGE Analysis

The undrafted rookie out of Texas had an NFL-high 292 rushing yards during the preseason, but there wasn't an obvious spot for him on Oakland's 53-man roster. He conveniently seems to have picked up some kind of injury, allowing the Raiders to stash him for another look in 2019.

Warren rushed for 54 yards and a touchdown on 15 carries and caught one of two targets for seven yards in Friday's preseason win over the Packers.

EDGE Analysis

Warren remains firmly in the mix for a chance at a roster spot behind starter Marshawn Lynch heading into Thursday's preseason finale against Seattle, as the undrafted rookie has shown his value throughout the first few exhibition contests. Given their light preseason workloads, both Lynch and fellow veteran Doug Martin appear to have secured their positioning on the depth chart while Jalen Richard and DeAndre Washington (knee) present Warren's main competition for a role in the backfield. Washington isn't slated to play Thursday after recently undergoing arthroscopic surgery, however, so there will be plenty of reps for Warren and Richard to split.

Warren (undisclosed) returned to practice Friday, Matt Schneiderman of the Mercury News reports.

EDGE Analysis

Warren missed a few days of practice with an undisclosed injury, but the running back now seems ready to get back into the thick of things. The undrafted rookie seems to have an uphill climb to a roster spot in Oakland.

Warren signed a contract with the Raiders on Monday.

EDGE Analysis

Warren spent three collegiate seasons at Texas and is coming off a 2017 campaign where he rushed 71 times for 314 yards and six touchdowns. While Warren faces long odds to make the Raiders final roster, his signing Monday indicates Oakland at least sees some sort of upside there. Look for Warren to battle for a spot throughout the offseason and potentially into training camp.