5. Serena Williams vs. Carlos Ramos
4 – 10
Serena Williams's bid for a 24th Grand Slam title imploded in a furious tirade against umpire Carlos Ramos in the US Open final on September 8. Williams called him a thief after he docked her a point for two code violations. pic.twitter.com/doTVzFPWru
— PLAYBET (@PLAYBET) December 26, 2018
Serena Williams lost in the U.S. Open this year, but if you asked her it was the poor officiating that led to her defeat. This led to a verbal altercation between Williams and the umpire Carlos Ramos that was one of the biggest tennis stories of the year.