Answer
Gilchrist scored at least 50 runs in successive World Cup finals three times. He achieved this feat in the 1999, 2003, and 2007 tournaments. In the 1999 final, he scored 54 runs, followed by 84 runs in the 2003 final. His most impressive performance came in the 2007 final, where he scored an unbeaten 149 runs, leading Australia to victory.