Some of the world's best tennis players, including world No. 1 Rafael Nadal and No. 2 Novak Djokovic, traded in their racquets for football boots on Wednesday on behalf of Japanese earthquake and tsunami victims.

Some 15 ATP stars, in Miami for the Masters 1000 hardcourt tournament that started this week, joined with the Fort Lauderdale Strikers of the second-level North American Soccer League in a light-hearted match that ended in a 4-2 victory for the Strikers.