Johanna Konta has been forced to pull out of this week's Charleston Open due to a shoulder injury and a bout of sickness.
The world number seven secured her second WTA Tour crown of the year on Saturday with a straight-sets defeat of Caroline Wozniacki at the Miami Open.
But any momentum gained from that triumph may have been stalled somewhat with the news Konta will play no part in the Premier clay-court event in Charleston.
"I'm very sorry to have to withdraw from Charleston, this is a great tournament and I was really looking forward to taking part," Konta said.
"I was battling a slight shoulder injury and sickness during Miami which has taken hold since the end of the tournament."