Venus hungers for more success after lean period

It's been a long road back for Venus Williams from injury and battling an auto-immune disease, but the American seven-time Grand Slam winner says she's still hungry to win.

The 32-year-old is playing her 18th year on the tour after missing most of the second half of 2010 with a knee injury and most of the first half of 2011 with hip and abdominal injuries.

Most recently, she had a seven-month lay-off between September 2011 and March 2012 battling Sjogren's Syndrome, which left her listless and drained of energy for years before being diagnosed and treated with medication.