Defending champion Dan Martin crashed out as Australia's Simon Gerrans won the 100th edition of Liege-Bastogne-Liege Classic in a sprint finish.

Spain's Alejandro Valverde finished second and Poland's Michal Kwiatkowski was third in the 263-km race.

Part of a lead group of some two dozen riders, after Irish rider Martin crashed on the final corner, Gerrans was the fastest in a drawn-out sprint.

Liege-Bastogne-Liege is the last major one-day Classic of the first half of the 2014 season.