Merkulov’s round, combined with his four-under 66 on stroke play co-host Miacomet Golf Course on Saturday, betters two players (Bert Atkinson in 1997 and Jeff Wilson in 2001) who shared the previous championship stroke-play record of 132.

Merkulov’s 65 on Sunday also matches the Sankaty Head competitive course record, held by five players, including Jimmy Ellis, who matched Merkulov on Sunday morning.

After half of the 264-player championship field endured more than five hours of fog delays at Sankaty Head on Saturday, the 6,645-yard course on the eastern end of the island was bathed in sunshine for much of Sunday, though buffeted by winds that averaged 16 mph and gusted to nearly 25 mph. There was just one short delay for fog on Saturday at Miacomet, eight miles away.

The suspensions of play on Saturday at Sankaty Head – along with a short Sunday delay caused by more than a half-inch of rain that fell in the early morning hours – meant that 42 players had yet to begin Round 2 of stroke play (all at Miacomet) when play was halted for the day on Sunday.

Merkulov was a bit frustrated with his play on Saturday, despite having shot a four-under in Round 1 at Miacomet.

“I had a nice discussion with my coach [Saturday] night, and that helped me regroup,” said the Duke University graduate, who was born in Smolensk, in western Russia. “The big thing today was staying committed to what you were trying to hit, whether you were trying to ride the wind or fight the wind, whatever it was, you have to commit to the shot. If you stray from that in this wind, good luck.”

Merkulov noted that two of his birdies came after he hit tee shots into the fescue, on the par-4 11th and the par-4 16th. “Another big thing is that I putted really well,” noted Merkulov, who reached the quarterfinals of the 2009 U.S. Junior (losing to Jordan Spieth) and the 2019 U.S. Mid-Amateur. “I had a lot of putts inside 10 feet that I played outside the hole, and I don’t remember missing one.”

Merkulov’s nine-under total was six strokes better than any of the nearly 120 players – just under half the field – who completed 36 holes on Sunday. Nathan Colson, Marc Engellenner, and Jimmy Ellis all stood at three-under 137, with Engellenner getting to six-under for the day at Miacomet on Sunday before settling for a four-under 66 on the 6,782-yard layout.

Among those who had not completed Round 2, Harvin Groft was at eight-under through 11 holes at Sankaty Head, going out in four-under 31 after a 66 at Miacomet on Saturday.

Garrett Rank, an NHL referee from Canada who was the runner-up in this championship in 2012, stood at five-under through two holes at Miacomet after a 66 at Sankaty Head on Saturday that was highlighted by eight birdies.

Among those who have completed 36 holes, 2008 U.S. Amateur runner-up Drew Kittleson rebounded with a three-under 67 at Sankaty Head on Sunday to finish at one-under 139, in a group of five players that includes Zach Atkinson, who shot 66 at Sankaty Head; and Marc Dull, a two-time USGA runner-up – in this championship in 2015 and in the 2018 U.S. Amateur Four-Ball.

Australian defending champion, Lukas Michel, sits at four-over halfway through his second round with plenty of work to do if he is to advance further.