Borna Coric is the newest hero in Croatia.

The 21-year-old helped send his country to their third Davis Cup final. Battling against Francis Tiafoe in the final deciding match of the semifinals, the Croatian pulled off a thrilling win, 6-7, 6-1, 6-7, 6-1, 6-3.

By sealing the 3-2 victory against the USA, Coric showed why he is one of the sport's best new faces. He kept his cool by winning the final two sets to seal the match in just over 4 hours.

The 21-year-old also scored the first singles win of the weekend over Steve Johnson before his compatriot Marin Cilic beat Tiafoe to extend Croatia's lead to 2-0. The doubles came down to a fifth-set tiebreaker with Mike Bryan and Ryan Harrison closing the gap to 2-1. Sam Querrey then stepped up to upset Cilic and send the tie to the Coric vs. Tiafoe decider. 

Coric is having a breakthrough season, highlighted by beating Roger Federer in the final of Halle to secure his second ATP title. He also hit a career-high ranking of world No. 18 after reaching the fourth round at the US Open.

The Sunday victory against Tiafoe is the icing on the cake for the young player, and he called it the biggest win of his life. 

Croatia will take on France in the final in November.