8. Wood (2004)


After making the switch from Honda to Yamaha, Rossi won the first race of the season in 2004 – the first rider to win back-to-back races aboard different bikes. However, he followed that win with a pair of fourth-place finishes. Rossi mocked the situation by insinuating he’d won the wooden medal. His helmet was designed to resemble wood with a large, wooden medallion engraved with the roman numeral IV.