Danai overcomes faulty service to tame Eysseric

"I knew he is still young, so I planned to keep the ball in play and waited for him to miss. I was playing well but I served awfully," says Danai, who will next face Japan's Tatsuma Ito.

"[Ito] is very solid from the baseline and moves well from side to side. I have to use a lot of slice shots as he likes to face flat balls. I have to be careful with his returns and try to improve on my serves."

In Obama, Weerapat Doakmaiklee and Kirati Siributwong reached their first doubles final after they stunned top seeds Adriano Blasella of Italy and Daniel Garza of Mexico 6-4 7-6 (7/4).

"We are happy to be in the final after training in the US for more than a month. We beat two seeded teams coming into the final, so we are quite confident," says Weerapat, who together with Kirati, are trained by former USA Davis Cup junior coach Chuck Kriese.

In Indianapolis, top seed James Blake struggled early in the first set and fended off two set points in the second before defeating Jun Woong-sun of South Korea 6-3 7-5 in the second round. "I don't feel like this was my best match, but it got me through,'' he says.  Blake advanced to play Lu Yen-hsun of Taiwan in the quarter-finals. Lu defeated American Rajeev Ram 6-1 7-6 (7/1).

Fourth seed Sam Querrey rallied to beat compatriot Vincent Spadea 4-6 6-3 6-4 in the night match to earn a quarter-final tie against fellow American Bobby Reynolds, a 6-1 6-1 winner over Alejandro Falla of Colombia.