Daria Saville has maintained her excellent form to come from a set-down to beat Lucia Bronzetti and reach the last eight of the Miami Open.
Saville won 5-7 6-4 7-5 to make it nine wins in her last 11 Tour matches. She will now play either Swiss No.22 seed Belinda Bencic or Aliaksandra Sasnovich. It is her first quarter-final in Miami.
Bronzetti, who beat Australia's Ajla Tomljanovic in the opening round for her first win over a top-50 player, had match point in the third set but Saville fired in an unreturned serve.
She subsequently took the match in one minute shy of three hours play under the Florida sun.
The Italian had won the opening set in 54 minutes. It was the first set Saville had dropped in Miami, and a surprise after she raced into a 3-0, 30-0 lead on service. She led again at 5-3, 30-all, but lost four games on the spin to concede the first set concluding with a double-fault.
The 28-year-old disappeared for a toilet break - having originally arrived with her shirt inside out and had to change courtside.
When she returned she broke in the third game establishing an advantage she did not relinquish.
In the final set Bronzetti broke to lead 5-3. Saville immediately broke back but Bronzetti forced a break-point match-point. Savile's serve ended that threat and she went on to hold, break to love, and hold again, clinching the game on her first match point.
Saville, ranked 249 in the world but a former top-20 player, came into the tournament as a wild card while Bronzetti, ranked 102, was a lucky loser.