Rising star Ben Shelton finally entered the winner's circle on the ATP Tour when he defeated Aslan Karatsev at the Japan Open in Tokyo on Sunday.
World number six Holger Rune has partnered up with Novak Djokovic's former coach Boris Becker.
Hubert Hurkacz was defeated in three sets by Zhizhen Zang to crash out of the Japan Open first-round in Tokyo, denting his ATP finals qualification chances.
Cameron Norrie suffered a fourth-consecutive defeat as his poor form continued at the Japan Open.
German tennis star Alexander Zverev suffered a shock first-round straight-set defeat to Australian Jordan Thompson at the Japan Open in Tokyo on Monday.
Andrey Rublev secured his place in the Shanghai Masters final where he will face Hubert Hurkacz, after ending the run of Carlos Alcaraz killer Grigor Dimitrov.