Slovakian Klizan beat Lokoli 7-6 , 6-3, 4-6, 0-6, 6-4 to dump his opponent out of his home tournament in Paris.
But a spat midway through the match meant Lokoli was in no mood to be sporting at the end of the encounter.
After hitting wide his final shot, Lokoli refused to come to the net to shake Klizan’s hand.
His opponent came over to the Frenchman but was waved away, much to the derision of the crowd.
Laurent Lokoli (right) snubs Martin Klizan handshake
— Tenis Kanalı (@TenisKanali) May 30, 2017
— Pierre Henry-Dufeil (@PierreHD) May 30, 2017
The spat started when Lokoli too umbrage to some vocal Klizan postulating after a double fault handed the Slovakian a 5-2 lead in the fifth set.
The pair traded verbal blows from their seats, with the French Open umpire forced to step in.
“If I did not shake hands with him, it is because there is a reason,” Lokoli said.
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Lokoli is out of the French Open French Open 2017 pictures Mon, May 29, 2017
Pictures from the French Open 2017, the second tennis Grand Slam of the year.
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Garbine Muguruza playing at the French Open
“He made out to be hurting his leg for two sets and was then running around like a rabbit in the fifth set.
“After that he talks to me of respect. It is just disrespectful, what he did.”
Klizan will play either Andy Murray or Andrey Kuznetsov in the second round.