49ers' Trent Williams Forgets Past with Commanders Ahead of Matchup

• Trent Williams, nearing the end of his 16-year career, forgot he played for the Commanders.
• Williams spent nine seasons with the Washington team, missing 2019 due to conflicts.
• He earned seven Pro Bowl selections and one second-team All-Pro during his time with Washington.
• Williams and the 49ers are set to play against the Commanders on Monday night.
• Williams' admission came as he prepared for the upcoming game against his former team.