By Mark Lamport-Stokes INDIAN WELLS, California, March 10 (Reuters) - Simply being back on the tennis court felt like a victory for Mardy Fish on Sunday after the American returned to action following a lengthy recovery from a heart condition. The fact that he was able to fight back from a break down in the third set to seal a 6-3 3-6 6-4 win against compatriot Bobby Reynolds at the BNP Paribas Open was double cause for celebration.