The ace claimed six ranking titles last season but failed to defend his world championship title in the season-ending tournament.
Elsewhere, Bayer Leverkusen cruised into the next round as Nadiem Amiri's brace rounded off the 7-0 goal fest against Eintracht Norderstedt.
New Arsenal signing Willian chipped in with two assists as Gabriel, another Brazilian debutant, netted the second with a header shortly after the break before Arsenal captain Pierre-Emerick Aubameyang rounded off an easy win before the hour.
"A match like today, I just feel like Pironkova was serving well, she was hitting winners everywhere," Williams said. "Maybe I wasn't being aggressive enough. So I think it's more or less me adjusting my game in the second set and coming back and just trying to do better."
Rafinha joined Flamengo from Bayern Munich in June last year and helped the Rio de Janeiro club secure a historic Copa Libertadores-Brazilian Serie A double five months later.
Although the process is quite tough, the Asian junior record holder still firmly believes that he can return to his best form soon.
Frankfurt were more clinical with their chances and punished courageous Nuremberg as Bas Dost's volley assist allowed Andre Silva to nod home the opener six minutes into the second half.
Ruzomberok succeeded in cutting the lead to one thanks to Kmet who came on top after a series of shots and saves in Dunajska Streda's penalty box and enabled the visitors to push for their fifth draw in six rounds. But their efforts got thwarted by Martin Boda's red card in the final minute of regulation and Dunajska Streda defended the 3-2 lead.
Zhang introduced that his company set up the first community smart gym in Guiyang on July 10 this year and it has planned to establish 1,000 community smart gyms in three years in Guizhou.
The 30-year-old came off the bench in the 67th minute and rifled home a low 35-yard free-kick in stoppage time as the hosts secured a barely-deserved point at their Vila Belmiro stadium.
"We are now starting a new cycle with our feet on the ground and our head toward the stars. Mano Menezes, welcome," Bahia president Guilherme Bellintani said on Twitter.