Coleman Wong Chak-lam needs to be flawless on the first serve and “a goalkeeper” when receiving if he stands any chance of beating world No 14 Ben Shelton in the Miami Open on Saturday, his coach said.

Hong Kong’s top player made history on Thursday when he became the first from the city to win a match at an ATP Masters 1000 tournament, beating world No 82 Daniel Altmaier 6-4, 6-3.

The 20-year-old Wong’s coach, James Allemby said that victory had been built on a series of lessons learned over a tough start to the 2025 season.

“This is our sixth week now in a row, and we’ve made a point of learning lessons from each week and then building on those and not falling into the same traps,” Allemby said. “We’ve been pretty systematic in reinforcing those every day.”

Wong will face Shelton in the round of 64 on centre court at 11pm, Hong Kong time.

Coleman Wong (left) alongside coach James Allemby at the Australian Open. Photo: Instagram/ hambittttt

Shelton, who is the son of former American tennis player Bryan Shelton, stands at 6ft 4in and weighs 88kg. He uses his power and height to his advantage, hitting serves that can reach more than 240km per hour.