BOSTON (AP) — Former Red Sox pitcher Curt Schilling could be forced to sell a blood-stained sock he wore to lead the team to its first World Series championship in 86 years, as well as other memorabilia, to help pay back millions of dollars in loans he guaranteed for his failed video game company.

The sock, worn by Schilling in the 2004 World Series, was among the collateral he pledged to lenders, according to a document filed with the Massachusetts Secretary of State’s office.

A sports memorabilia expert tells The Boston Globe the sock could fetch up to $25,000.

Other items used as collateral include a cap worn by New York Yankees great Lou Gehrig and Schilling’s collection of World War II memorabilia.

The Rhode Island-based company, 38 Studios, filed for bankruptcy in June.