MELBOURNE, Australia (AFP) — Serena Williams says she is a humble person who sometimes forgets all she has achieved, crediting hard work and a calm persona for her sensational career. The American, 35, widely considered one of the best athletes in any sport, is on the cusp of beating Steffi Graf to claim an Open-era record 23rd Grand Slam title. It has taken her 20 years to get to this point, with few players being […]