Serena Williams withdraws from Australian Open

WEST PALM BEACH, Fl. — Serena Williams won’t be defending her Australian Open title after the American withdrew from the first grand slam of the 2018 season, saying she needs “more time” after giving birth last year.
The 23-time grand slam winner returned to the court at the Mubadala World Tennis Championship in Abu Dhabi at the weekend, less than four months after becoming a mum, but playing that tournament has given the American pause for thought.
“After competing