The Raiders filled out their eight-player practice squad Sunday, signing four players to join the four added on Saturday.
Chekwa (6-0, 194) was waived on Friday in the Raiders’ active-roster reduction to 53 players. He played in four games for the Silver and Black after joining the team as a fourth-round (113th overall) draft pick in 2011.
Meatoga (6-1, 295) was in training camp with the Cincinnati Bengals, signing as a non-drafted free agent out of Hawaii. He played in 52 games over four collegiate seasons.
Miller (6-3, 300), who played in four preseason games with the Raiders, was also waived on Friday. The first-year player was in training camp with the Pittsburgh Steelers in 2011.
Stewart (5-11, 215) was in training camp with the New York Jets. He originally signed with the Philadelphia Eagles as a non-drafted free agent out of Stanford.
Teams can establish a practice squad of up to eight players that are free agents who do not have an accrued season of free agency credit or who were on the 46-player active list for less than nine regular-season games during their only accrued season(s). A player cannot participate on the practice squad for more than three seasons.