Lowest score in 72 holes in a golf PGA Tour event

The lowest score in a golf PGA Tour event after 72 holes is 253 (59, 64, 65, 65; 27 strokes under par) and was achieved by Justin Thomas (USA) at the 2017 Sony Open on 12–15 January 2017 at the Waialae Country Club in Honolulu, Hawaii, USA.

Thomas opened with a round of 59, only the eighth sub-60 round ever hit on the PGA Tour at that time. His 36-hole total of 123 is also a record, while he tied Steve Stricker’s 54-hole record of 188.