ENGLEWOOD, Colo. — The Broncos claimed four players off waivers Sunday as their 53-man roster continues to take shape ahead of a Week 1 game in Oakland.

Denver claimed quarterback Brandon Allen from the Los Angeles Rams, wide receiver Diontae Spencer from Pittsburgh, guard/center Corey Levin from Tennessee and fullback/tight end Andrew Beck from New England.

The Broncos, whose roster was at 52 players, waived WR River Cracraft, LB Josh Watson and OL Jake Rodgers in corresponding moves.

Allen, a 2016 sixth-round pick, completed 44-of-69 passes for 431 yards and a 63.1 completion percentage in the 2019 preseason. The former Ram has not appeared in a regular-season game.

Spencer first entered the NFL in 2014. He spent the offseason with the Rams before playing for a pair of teams in the Canadian Football League. Spencer then returned to the NFL in January when he signed with the Steelers. He caught four passes for 39 yards and returned seven punts for a 14.7-yard average for Pittsburgh in the 2019 preseason. His longest return went for 38 yards.

Levin was drafted in the sixth round of the 2017 NFL Draft by the Titans. He appeared in all 16 games and started one in 2016.

Beck, a rookie out of Texas, tallied one reception and one rushing attempt for New England in the preseason. Starting fullback Andy Janovich is expected to miss at least a couple of more weeks with a pectoral injury.

Denver also signed seven players to its practice squad. The team signed CB Alijah Holder, QB Brett Rypien, DL Deyon Sizer, OLB Ahmad Gooden, OL Quinn Bailey, WR Fred Brown and OL Tyler Jones. All seven players spent at least a portion of the preseason with the Broncos. Denver is able to sign three more players to its practice squad.