Ryan Moore leads by one stroke from Jordan Spieth heading into the final round of the Valspar Championship in Palm Harbour.
The 32-year-old made a steady start to his round with nine pars to reach the turn at five under for the tournament.
However, Moore's round came to life with consecutive birdies at 13 and 14, before picking up further shots at the 16th and 18th to take the clubhouse lead.
Speith, who started the day one behind overnight leader Brendon de Jonge, stayed in contention with four birdies and a bogey in a round of 68.
De Jonge's tournament hopes unravelled with a run of five bogeys in six holes on the front nine, on his way to a four-over par 75.
