Raiders assistant offensive line coach Steve Wisniewski resigned Thursday, citing personal reasons.
The Raiders won't fill the position this season, the team announced in a news release.
Wisniewski, an eight-time Pro Bowler who played 13 seasons in the NFL with the Raiders, was drafted by the Dallas Cowboys in 1989 and traded to the Raiders. He started the final 175 games in a row before retiring after the 2001 season.
Frank Pollack is the Raiders' offensive line coach, replacing Bob Wyllie in February when the team hired Dennis Allen as head coach.
Wisniewski will remain affiliated with the team in some capacity and his departure should not impact Raiders center Stefen Wisniewski.