Seamus Power's remarkable form continued at the American Express tournament in California as the Waterford native hit a six-under-par 66 to sit two shots off the lead ahead of the final round.
Following on from last week's top-three finish at the Sony Open in Hawaii, Power has again put himself in contention for his second PGA Tour title at the La Quinta course following a terrific third round that left him on 16-under overall.
The 2016 Olympian is two off Lee Hodges and Paul Barjon's lead, while Tom Hoge is one shot ahead of Power in third place.
Power began the week with a statement seven-under 65 and again went under par on Friday to move to ten-under. He played himself ten places up the leaderboard on moving day Saturday with another excellent round of golf.
The East Tennessee State University graduate hit form early in his third round as his opening par was followed by a run of birdies from the second to the fifth hole, before gaining two further shots on the sixth with an eagle three.
Power handed one back on the ninth and produced a steady one-under par back nine to end the day on 16-under.
Graeme McDowell is eight-under for the tournament after carding a one-over 73 on Saturday.
Power tees off in the penultimate group alongside Harry Higgs and Hudson Swafford at 10:45am (6:45pm Irish time).