The Offaly man is now nine shots under par for the tournament and nine shots of the lead.
Lowry had earlier been tied for the lead, but slipped back to his current position of 23rd, nine shots off the lead.
— Shane Lowry (@ShaneLowryGolf) August 14, 2020
South Korean Kim Si-woo is the man to catch on 18-under, 2 shots clear of the chasing pack.
Further back the field, Waterford's Seamus Power carded a three under par round of 67, leaving him six under all round.