Bay Hill provided a few dramatic turnarounds, good news for Henrik Stenson, not so much for Phil Mickelson. Through it all, Tommy Fleetwood and Keegan Bradley kept a steady march of solid golf Friday and wound up tied for the lead at the Arnold Palmer Invitational, four shots clear of anyone else going into the weekend on a course that has been tough all week. Bradley, with the renewed confidence of a player who last year ended six years without a PGA Tour victory, made all but one of his six birdies on the par 4s and had a 68.