(AP Photo/Mark Baker)
SINGAPORE (AP) Caroline Wozniacki credited her training for next month's New York Marathon as a key factor in her victory over Maria Sharapova in a grueling three-set match in the WTA Finals on Tuesday.
Wozniacki won 7-6 (4), 6-7 (5), 6-2 to beat Sharapova for the second-straight time, having also won in the fourth round of the U.S. Open. Tuesday's result in the round-robin match dealt a major blow to Sharapova's hopes of claiming the year-end No. 1 ranking.
Wozniacki, who has always been regarded as one of the fittest players on tour, said her additional running work in preparation for the marathon had taken her stamina to a new level and also given her added belief in Tuesday's 3 hour, 15-minute match.