An emotional Kyle Edmund overcame Gael Monfils in a thrilling final in Antwerp, winning two tie-breaks to take the title.
There was a Russian winner at the 2018 ATP Kremlin Cup as Moscow-born Karen Khachanov cruised past Adrian Mannarino.
John Isner says the All England Tennis Club should name the final set tie-breakers at Wimbledon after him.
It was joy for Ernests Gulbis but despair for John Isner in the Stockholm Open semi-finals.
Top seed John Isner needed almost three hours to overcome Tennys Sandgren and reach the Stockholm Open semi-finals.
Tie-breaks will settle matches at Wimbledon from 2019 onwards when opponents are locked at 12-12 in the final set.
Despite a scare in Stockholm, John Isner remains in contention for a place at the ATP Finals in London.
Youngsters Stefanos Tsitsipas and Denis Shapovalov won their respective matches at the Stockholm Open on Wednesday.
Rafael Nadal looks likely to feature in the revamped 2019 Davis Cup, but Gerard Pique is less sure over Roger Federer's involvement.
Defending champion Jo-Wilfried Tsonga ended an eight-month wait for a win in Antwerp and will now face compatriot Gael Monfils.