ESPN has uncovered evidence that indicates Pete Rose bet on baseball games when he was still a player, which could derail Rose’s faint hopes of getting his name in Major League Baseball’s Hall of Fame.

On Monday, ESPN’s Outside The Lines reported obtaining a notebook belonging to Michael Bertolini, a convicted fraudster who handled Rose’s wagering with mob-linked bookies. The notebook, which was seized during a 1989 raid by US federal authorities and has been under court-ordered seal ever since, indicates that Rose placed wagers on baseball games in 1986, his final year as a player.

Rose was hit with a lifetime ban from baseball in 1989 after his betting activity was revealed but has been waging a campaign for reinstatement ever since. Rose, who amassed 4,256 hits during his lengthy playing career, would be a shoe-in for the Hall of Fame were it not for the suspension.

In 2004, after years of denials, Rose admitted to betting on baseball but has long maintained that he only bet on baseball while serving as the Cincinnati Reds’ manager. Bertolini’s notebook indicates that Rose bet on multiple games per day for days at a stretch in 1986, including wagers on Reds games, but there’s no evidence that Rose ever bet on the Reds to lose.