After Serena Williams controversial loss to Osaka in US open final, many celebrities has credited Serena's act for clarifying herself to the umpire. In Gabrielle Union recent tweets she said "All praise to both s

@serenawilliams the best athlete the world has ever seen & @Naomi_Osaka_ demonstrating #BlackGirlMagic & fierce determination. Very proud. Tears watching the hug

But the tweet doesn't go down well with football fans as someone replied her tweet with"you spelt Messi wrong" which implies Messi is the greatest ever not Serena. Gabrielle then reply with a tweet "When Messi gives birth, almost dies and comes back to dominate lemme know" This has become a debate on Twitter on who the greatest athlete is and comparison between Messi and Serena Williams.