NEW YORK — Hall of Fame football star Jim Brown — running out of time to retrieve his 1964 NFL championship ring — has sued a memorabilia dealer.

The 78-year-old Los Angeles resident filed the lawsuit Tuesday i against Lelands.com and Lelands Collectibles Inc.

The lawsuit seeks to halt the sale of the ring in an online auction that ends Friday. It also seeks unspecified damages over broadcast remarks that Lelands’ founder, Joshua Evans, made about Brown.

Evans said Wednesday that Brown’s claims “are entirely without merit and we intend to vigorously defend against them.”

According to the lawsuit, the ring was stolen from Brown’s Cleveland home in the late 1960s and the robbery was reported to police.

The lawsuit also accuses Evans of making statements in print and broadcast interviews in recent weeks that implied Brown has diminished mental capacity as a result of taking thousands of hits as a football player. On at least one broadcast, though, Evans could be heard describing Brown as the greatest football player of all time and saying Brown was aware that a family member had sold the ring in the 1990s.

The lawsuit said the ring is priceless to the former Cleveland Browns player.