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  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

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  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

  • Former Oakland Raiders lineman Robert Gallery is selling his Danville, Calif. mansion. (Redfin)

Former Oakland Raiders lineman Robert Gallery has reduced the listing price of his Danville mansion by $500,000 to $5,495,800.

The six-bedroom, eight-bathroom home spans 8,000 square feet. It features a theater, pool, tennis court and go-cart racetrack among many other amenities.

Gallery purchased the home in 2009 for $3.675 million, according to public records. Joujou Chawla with Compass is the listing agent.

The Raiders drafted Gallery second overall in 2004 out of the University of Iowa. Now retired, Gallery played with the team from 2004-10. He later spent one year each on the roster for the Seattle Seahawks and New England Patriots.