Serena Williams destroyed another opponent at the Australian Open -- and her hubby thinks it's about time she gets the respect she deserves!!!
Check out Alexis Ohanian in the stands -- along with his sister-in-law Venus Williams -- watching his wife dominate Simona Halep in 2 straight sets.
His shirt reads, "Greatest Female Athlete" -- with the word "female" crossed out.
In other words, she's the G.O.A.T athlete -- men included!
There's more ... Ohanian also went to social media and talked some trash about Ion Tiriac -- the super-rich ex-tennis star who's the director of the Madrid Open.