McIlroy, Palmer, Henley and Knox in playoff at Honda

(Reuters) - Overnight leader Rory McIlroy, Americans Ryan Palmer and Russell Henley and Scotland's Russell Knox took the Honda Classic into a sudden-death playoff at Palm Beach Gardens in Florida on Sunday. The quartet finished the regulation 72 holes level at eight-under-par 272, Northern Irishman McIlroy closing with a four-over 74 at PGA National, Palmer carding a 69, Henley a 72 and Knox a 71. (Reporting by Andrew Both in Cary, North Carolina; Editing by Mark Lamport-Stokes)