Lowest total score (first 36 holes) in a golf PGA Tour event

Lowest total score (first 36 holes) in a golf PGA Tour event
Who
Justin Thomas
What
123 total number
Where
United States
When
15 January 2017

The lowest total score (first 36 holes) in a golf PGA Tour event is 123 achieved by Justin Thomas (USA) at the Sony Open in Hawaii, USA, on 15 January 2017

Justin shot a 59 in the first round becoming the youngest player in tour history to do this, at 23 years of age.