Summit this time was too high

It's tough to scale Qomolangma (Mt Everest), and even tougher trying to stay there.

That's the lesson China's top tennis ace Zheng Qinwen learned the hard way at Roland Garros after the world No 7 failed to repeat her successful "climb" last month over what has emerged a constant career hurdle in her deepest run at the French Open.

Hot on the heels of her first win over the same opponent two weeks ago, Zheng, however, found it's hard to get over "Mount Aryna" again in Paris as she struggled to bring out her best, caught up by the major-stage nerves, facing world No 1 Aryna Sabalenka in the quarterfinals at Roland Garros on Tuesday.