$10 million for a second-hand sweater: How the sports memorabilia market went to the moon

There are few limits in the world of sports memorabilia — almost everything can be collectable — which is probably what makes hardcore collectors a little strange. What sort of person thinks that Andre Agassi’s wig, for instance, is a worthwhile investment? The American tennis player’s spectacular 1980s toupee mullet sold for thousands of dollars to Robert Earl, the Planet Hollywood restaurant tycoon. A Red Sox baseball fan similarly bought the beard trimmings of MVP David Oritz, and another spent $10,000 for the masticated and spat-out bubblegum of Arizona Diamondbacks star Luis Gonzalez.