Breaking his serve can sometimes seem impossible, and that is a big reason why, with an otherwise fairly limited game, he has three wins over No 1 ranked players (Novak Djokovic twice and Rafa Nadal) as well as a victory over Roger Federer when he was No 2.
No one on the ATP tour has served more aces than the 2.08m American. He has banged down more than 14,000 at an average of more than 18 per match and, perhaps even more impressively, he has won 80 per cent of points when the first serve lands.
That effectiveness was shown again on Tuesday.
There were many times when Barrere gained an opening – to 15-30 or 0-30 – only for the 37-year-old to serve his way out of trouble.
“Yeah, I was going a bit crazy after that, every game,” said Barrere. “But my coach said to me to stay calm and keep trying. And that’s what I tried and I was happy that it worked at the end because there was a lot [of opportunities]. I tried not to be too frustrated and it worked in the end.”
It was a significant victory for the world No 88, especially given Isner’s record of two titles, a semi-final and four quarter-finals in Auckland.
“He’s a very tough opponent, especially on indoor hard court, but it’s also my best court. So I knew I had a chance against him.”
The key, ironically, was the Barrere service game, as he was rock solid - never giving up a break opportunity - if not as spectacular, with 10 aces compared to 28.
“The main thing was to [hold] my serve and then to try the return,” said Barrere. “I tried to stay focussed.”
The 28-year-old, who has yet to win an ATP title (Isner has 16) said the qualifying matches had also been vital, at this early stage of the season.
The loss of the first set was tough to take, as Isner saved a break point, then a set point at 4-5 down, before clinching the tiebreak.
A second tiebreak seemed inevitable, as neither player forced a break opportunity.
Isner was two points from victory at 5-3 up in the tiebreak before Barrere dug himself out.
He was partly helped by a forehand winner off the edge of the racquet but also showed commendable grit to win four straight clutch points.
“I had a bit of luck [but] sometimes you need luck to beat that guy,” said Barrere.
He then broke Isner in the fifth game of the final set, before converting his first match point.
Also on Tuesday, American qualifier Christopher Eubanks edged 2020 champion Ugo Humbert 7-6 (4) 7-6 (3) in just under two hours. It was a remarkably close contest – with both players perfect on serve, as Humbert saved four break points and Eubanks six – but the world 123 found the answers in both tiebreaks.
In other first round matches, Czech qualifier Jiri Lehecka beat Brazil’s Thiago Monteiro 6-3 7-5, Quentin Halys (France) toppled Alex Molcan (Slovakia) 6-3 6-4 and American Marcos Giron prevailed over Federico Coria 6-7(5) 6-4 7-5.
Meanwhile, American wildcard Ben Shelton justified the hype around him, with an impressive 7-6 (1) 6-1 dispatch of seventh seed Sebastian Baez of Argentina. The 20-year-old world No 96, who climbed more than 450 ranking places over the last year, gave an assured display, noticeably lifting in the second set.
