April 25 (Reuters) - Long-hitting American Ricky Barnes made a welcome return to form after two months of struggle as he charged into an early two-shot lead in Thursday's opening round of the Zurich Classic of New Orleans in Avondale, Louisiana. The 32-year-old, who is bidding for his first victory on the PGA Tour, took advantage of receptive, rain-softened conditions at the TPC Louisiana to fire a sizzling eight-under-par 64. ... More...