Serena Williams sets a new record at the US Open

ByFrancis Chidera

Serena Williams sets a new record at the US Open.   Serena, a six-time champion at Flushing Meadows, made history by winning her opening match against fellow American Kristie Ahn. Her older sister Venus bowed out after defeat to Karolina Muchova. The 38-year-old African American surpassed Chris Evert as the all-time leader in matches won…