(Reuters) - Jason Day crowned a brilliant back nine with an eagle at the 16th to seize a one-stroke lead with a six-under-par 66 in Thursday's opening round of the Arnold Palmer Invitational in Orlando, Florida. The blazing finish by the reigning PGA Championship winner vaulted him ahead of an impressive group at five-under that included compatriots Adam Scott and Marc Leishman, Sweden's Henrik Stenson and Americans Brendan Steele and Troy Merritt. The red-hot Scott, winner of his last two events, again showed command of the short stick since having to give up his anchored putter this year, saving par twice from five feet, once from 10 and once from 12. More...