Opelka refuses to shake hands with the umpire after controversial match point

Tough stuff for Reilly Opelka in Lyon after the American lost a horrific match against home favorite Corentin Moutet after a huge final breaker that saw both players saving match points.

Why Opelka was furious

The American was leading 6-4 in the final tiebreak and on a match point, he thought that a ball returned by Moutet was out (and it was also called out). Eventually, the ball was called in and Opelka ended up losing the match 6-3 2-6 7-6 (10).

In the end, he refused to shake hands with the umpire.

What about introducing this Hawkeye on clay?