Jannik Sinner says his serve was 'a disaster' in his surprise Lyon defeat to Arthur Rinderknech in Lyon.
Sinner was well-short of his best, although still expected to have enough to beat the lucky loser.
The Frenchman had other ideas, though, and battled his way to a 7-6, 2-6, 7-5 win against the sixth-seed with multiple breaks in the deciding set.
It was a match that understandably irked Sinner, particularly given he had ample opportunities to win it, but he was trying to keep his perspective after the match.
"Not the performance I wanted yesterday. Didn't find the solution, congrats to Arthur Rinderknech," Sinner said on Twitter. "Felt like a step back after the first round.
"But this is tennis. Now to prepare for the main goal, Roland Garros."
"My serve today was completely a disaster, as I said, it's difficult to win a match even if you try your best."
Sinner made something of a breakthrough last year at Roland Garros, where he reached the quarterfinals before losing to Rafael Nadal.
This year he looks even better equipped to excel in Paris as he will be seeded and has some form going into the tournament having reached his first Masters final in Miami.
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