Tsonga was serving for the match at 6-3 and 5-4, but the Argentine broke back. That gave him a boost as he took Tsonga’s serve in the very next game before serving it out and levelling the match at 1 set all.
Nalbandian was all over Tsonga at the beginning of the third set and it paid off as he went a break up. He held his own service games with confidence and his famous backhand was working like in the good old times.
It wasn’t long before he could punch the air in joy and celebrate this superb victory.
Nalbandian’s next opponent will be last year’s finalist Rafa Nadal, who ousted Alexandr Dolgopolov of Ukraine 6-3 6-2.
Also through to the quarterfinals is the American John Isner, who defeated the Australian qualifier Matthew Ebden 6-4 7-5. Isner and Harrison are the last Americans left in the draw.
And Isner could well meet him in the quarterfinal, but it will all depend what the result of the Harrison – Simon match will be.