We are at the mid-point of the US Open Tennis Championship. But before fans even gathered at Flushing Meadows, NY, commentators were already reminiscing about last year’s women’s final and Serena Williams’ angry diatribe, in which she branded chair umpire Carlos Ramos a “liar” and a “thief.” During the 2018 final against Naomi Osaka, Williams was slapped with a code violation for receiving coaching. She disagreed, became angry, her game started to fall apart, and…