Pepperell was travelling well as he stepped to the tee on the par-3 ninth hole at Walton Heath Golf Club having played the opening eight holes in one under par.
But the 27-year-old Englishman's day was about to explode (in a good way) over the next three holes.
The World No. 50 fired his tee shot at the ninth straight at the Union Jack-emblazoned flag 157 metres away, which soon played host to one of the more remarkable tournament aces in recent memory.
Much to the amazement of the gallery flanking the green, Pepperell's ball pitched inches short of the hole, ricocheted off the flagstick up towards the flag itself, then pitched again just short of the hole and spun forward into the bottom of the cup.
Not bad huh?
CRAZY HOLE-IN-ONEOctober 11, 2018
And the ace kick-started Pepperell who went on to birdie the 10th and eagle the par-five 11th to cap a five-under run in three holes.
He cooled off from there and eventually signed for a 5-under 67 which was good enough for the co-lead at day's end alongside countrymen Tommy Fleetwood and Matt Wallace.
Brett Rumford was the best of the Australians at 1 under and sharing 31st.
Next best were Marcus Fraser, Wade Ormsby and Lucas Herbert at even par.
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