John McEnroe's remarks about Serena Williams were validated -- by Serena Williams

Jon McEnroe drew the ire of many when he told NPR that Serena Williams was the "best female player ever," but against men would probably only rank 700th in the world. It seems he was only exaggerating what Williams herself told David Letterman in 2013.

When asked if she would play that year's Wimbledon winner Andy Murray, she told the now retired talk show host, "Men's tennis and women's tennis are completely, almost, two separate sports. If I were to play Andy Murray, I would lose 6-0, 6-0 in five to six minutes, maybe 10 minutes."

She then said, "The men are a lot faster and they serve harder, they hit harder; it’s just a different game. I love to play women’s tennis. I only want to play girls, because I don’t want to be embarrassed."

Tennis enthusiast Mike Opelka said on today's "Pure Opelka" that everybody should calm down. "John McEnroe was right. It is a very different game." The "best female player ever" confirmed that.

To see more from Mike, visit his channel onTheBlaze and listen live to “Pure Opelka” weekdays 7–10 p.m. ET & Saturdays 6–9 a.m. ET, only on TheBlaze Radio Network.