Serena Williams
The recently-retired Williams is arguably the greatest female tennis player. She’s definitely in the conversation but unfortunately, some fans lost patience with her. Williams had some amazing moments but she also let herself down at times. She ranted at umpires and tarnished her opponents’ victories by creating drama (via Tennis.com).

One notorious moment saw her steal Naomi Osaka’s thunder when the Japanese star won the Australian Open. Williams made the greatest victory of Osaka’s fledgling career about her when she complained about the officials. It was horrible because Osaka even cried and apologized. This turned many tennis fans against Williams who didn’t show enough decorum.