In 2006, Marchi once again failed to win when fellow Brazilian Adriano Moraes came from behind to claim the PBR World Championship, with Marchi placing second.
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In 2005, Guilherme Marchi was the biggest threat to Justin McBride’s dream of being the PBR World Champion.
Guilherme Arantes | Sergio Marchi | Guilherme Franco | MArchI | John Marchi | Michelangelo Alessandro Colli-Marchi | Matthew de Marchi | Guilherme Marchi | Guilherme Finkler |
He joined the PBR full-time in 2007 and finished in 3rd place behind Justin McBride and Guilherme Marchi that year.