“I’m fairly relaxed, and I was feeling the ball well (Wednesday) morning,” Pospisil said. “When I’m feeling the ball well, I don’t panic.”
In other second-round matches, Slovakia’s Lukas Lacko beat sixth-seeded Denis Istomin of Uzbekistan 5-7, 6-1, 6-4; Israel’s Dudi Sela topped ninth-seeded Sam Querrey of the United States 6-2, 6-4; and American Jack Sock beat New Zealand’s Michael Venus 6-4, 6-2.
Seventh-seeded Yen-hsun Lu of Taiwan beat American Alex Kuznetsov 6-4, 6-4 in a first-round match.
“Sam didn’t serve his best that game, and I took that to my advantage,” Sela said. “I think I’m moving fairly good, better than before.”
Defending champion John Isner, the No. 1 seed, will open play today against wild-card entry Robby Ginepri, the former Wheeler High School star. Ginepri beat Ukraine’s Sergiy Stakhovsky on Tuesday.
South Africa’s Kevin Anderson, the No. 2 seed who lost to Isner in the final last year, will start play today against qualifier Thiemo de Bakker of the Netherlands.