An inflamed knee has caused Serena Williams to pull out of her first match of 2016.

UPDATE: Serena Williams has withdrawn from the #HopmanCup due to injury. Vicky Duval will replace her in the USA’s final tie tomorrow night.

— Hopman Cup (@hopmancup) January 6, 2016

“I just have some inflammation that’s been going away very slowly, it is going away but it needs a little more time,” Williams tells reporters.

And, in true Serena Williams fashion added, “It’s not even a bump — just a really minor thing in the road and I’ll fly over it.”

Williams is still expected to travel to Melbourne to continue preparing for the Australian Open, which begins on January 18th.