HIROSHIMA, Japan - No.2 seed Hsieh Su-wei needed just 73 minutes to reach her fourth quarterfinal of the season at the Hana-cupid Japan Women's Open on Thursday, defeating Luxembourg's Mandy Minella, 6-3, 6-2.

In the inverse of her opening round match against Polona Hercog, where she dropped the opening set before rallying for victory, Hsieh won 10 of the last 13 games from 2-2 in the opening set to reach the last eight.

The No.2 seed won five straight games en route to building a 6-3, 4-0 lead in the match, and held strong during a mid-match surge from the World No.139 and Ladies' Championship Gstaad runner-up to set up a quarterfinal meeting with No.5 seed Ajla Tomljanovic. 

"I was feeling a little bit tight on the court. It was not easy for me to get into the game at the beginning," Hsieh said after the match.

"I think she was a little bit tight today too...and I'm happy that I was doing better after a few games and started to hit the ball better."

Minella won back-to-back games after saving two break points which would've seen her trail 5-0 in the second set, but was unable to take advantage of a pair of game points en route to dropping serve for a fourth time in the contest.

Hsieh again held off the Luxembourg No.1 in what became the match's final game, as she rallied from 0-40 down and ultimately saved four break points before converting the win on her first match point.

The World No.40 struck 25 winners to just 16 unforced errors in the win, converting four of the six break points she held. Minella totaled 20 unforced errors to just 14 winners, and converted just one of six break points overall. 

"I never played Ajla before. I think she's a great player, and I practiced with her a few years ago," Hsieh recalled. "She hits the ball great and she serves great, I think it's going to be a very tough match. I think I need to be a little bit more relaxed for the next match, and it will will help me to get into it better."