In the 2005 MotoGP season, he took part in Japanese Grand Prix as a wild-card rider for Kawasaki Moriwaki.
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In the wet 2005 Chinese Grand Prix at Shanghai, van den Goorbergh substituted for the injured Makoto Tamada.
He stayed in the team for the 2005 season, which saw him become competitive by the end of the year, aided by improving Bridgestone tyres.