Tiger Woods and Charlie Wi are co-leading the Arnold Palmer Invitational by one stroke at the halfway mark.
Woods shot 7-under 65 on Friday to lead by one at 10-under par heading into the clubhouse.
Not to be outdone, Wi made a late charge of his own. Playing in the last group, the South Korean finished with a birdie on four of his last six holes, for a 68 and a share of the lead.
Jason Dufner, and Graeme Mcdowell share second place at 9 under. McDowell shot 63 to miss tying the Bay Hill course record by a shot.
Justin Rose is alone in fifth at 6 under.
Bubba Watson, Sergio Garcia, Vijay Singh, Chris Stroud, Webb Simpson and Zach Johnson are tied for sixth at 5 under.