Serena focused on winning in Australia

Serena Williams admitted that winning the calendar year Grand Slam remains her ultimate ambition, but added that she is currently more focused on winning next season's opening major – the Australian Open.

The world number one was only two matches away from achieving tennis' rarest feat when she lost in the semi-finals of the US Open to Roberta Vinci.

Despite falling short of becoming the first player since Steffi Graf in 1988 to win the Grand Slam, Williams was names as the Sports Illustrated Sportsperson of the Year on Monday, and was celebrated in a banquet in Manhattan on Tuesday.

When asked if winning the Grand Slam remains her goal for 2016, the 34-year-old said: "It is, obviously. I've never done it."

"We'll see. I'm not putting any pressure on it. I'd have to have a good year in the beginning, win Australia, win French. I've only won the French three times, so that's going to be a little difficult to do."

Williams hasn't played any competitive tennis since her September defeat at Flushing Meadows, while recuperating from an knee and elbow injuries.