Ben Shelton lost to former World No. 7 David Goffin in the second round at the Shanghai Masters 2-6, 4-6 on Friday and missed the opportunity to boost his ATP Tour Final hopes on his return to the tour on Friday.
Medvedev clinched his maiden Masters shield in Cincinnati, extending a dominant run that saw him reach three finals in three weeks.
The Croatian defeats Belgium's David Goffin 7-6 (6), 6-2, 6-4
German tennis player Alexander Zverev had to work hard to eliminate Belgian David Goffin 6-4, 3-6, 6-3 in the quarterfinals…
Dimitrov will climb to third in the rankings behind only Rafael Nadal and Roger Federer as he begins to deliver decisively on his rich promise as a youngster.
Grigor Dimitrov steamrolled Pablo Carreño Busta 6-1, 6-1 in just over an hour.
"I am really happy. It was such a good atmosphere tonight," Goffin said after his momentous win.
Thiem beat Bolelli 7-5, 6-1, 6-3, while Goffin registered a 6-2, 6-4, 3-6, 6-3 win over Stakhovsky.
Goffin held his serve in the eighth game to build a solid start.
Grigor Dimitrov has reached his second ever Grand Slam semi-final, after Wimbledon three years ago.
