Dolph Jagger was a British immigrant prize fighter and high-ranking member of the second iteration of the Sydney Coves who lived in California during the Wild West era. In 1878, he traveled to Rooker's Mill to compete in Elijah Rooker's tournament, and he nearly got into a fight with another prize fighter, Ah Sahm, at the tavern before Rosalita Vega broke up the argument. Jagger, who had threatened to kill Ah Sahm, later met him in the tournament, where Ah Sahm defeated him with a single kick as Jagger charged at him.