Marc Polmans, with Andrew Whittington, reached the semi-final of a tennis tournament where who were the defending champions?
Marc Polmans Marc Polmans (born 2 May 1997) is a South African born Australian tennis player. Polmans won the 2015 Australian Open – Boys' Doubles title with fellow Australian Jake Delaney, defeating Hubert Hurkacz and Alex Molčan in the final, 0–6, 6–2, [10–8]. He reached the semi-final of the 2017 Australian Open – Men's Doubles with Andrew Whittington.
World Team Cup The World Team Cup was the international men's team championship of the Association of Tennis Professionals (ATP). The inaugural edition of the tournament was contested in 1975 in Kingston, Jamaica and was called the Nations Cup. No tournament was held in 1976 and 1977. From 1978 through 2012 the tournament was held annually in Düsseldorf, Germany. It was generally considered to be second most prestigious men's team competition in tennis after the Davis Cup.