Tennis-Pegula cruises, Krejcikova crashes out as US Open begins
By Amy Tennery NEW YORK, Aug 30 (Reuters) - Highest-ranked American Jessica Pegula cruised into the U.S. Open second round while 27th seed Barbora Krejcikova crashed out, as the year's final major got underway on Sunday with a record purse of $108 million up for grabs.