Paul Dunne is back at St. Andrews as a co-leader and made a hole-in-one in his professional debut

Remember Paul Dunne, who electrified the golf world at this year's Open? You knew he became a major storyline when Dunne had ESPN's Tom Rinaldi cracking up awkwardly at the then-amateur's dry jokes. It was pretty cool to see a 22-year-old amateur holding the 54-hole lead at St. Andrews.

Now a pro, Dunne made his debut at this week's Dunhill Links Championship. How'd he make his first round memorable? He had the 10th hole-in-one in tournament history -- in just his sixth hole played as a professional (he teed off at the 10th).

The hole-in-one came at the 15th hole at Kingsbarns, down the road from the Old Course. Dunne's dunked 5-iron from 205 yards is also the first ace at the hole by a pro.

Apparently Dunne has a flair for the dramatic, as he showed at the Old Course through 54 holes. Also noteworthy: Dunne has shed his head-to-toe Under Armour apparel that drew comparisons to Jordan Spieth in July.