Another break in the third game of the second set effectively spelled the end for the Adelaide man, though he offered some resistance in a 14-minute eight deuce game when Shapovalov went haywire.
But another double fault from Kokkinakis gave another break for the 23-year-old Canadian, who then had his only major problem with error-riddled play while serving for the match.
Kokkinakis’ respite was short-lived, however, as, for the second time, Shapovalov served for the win in 89 minutes.
The second singles will be the pivotal blockbuster between the two star singles players of the week, Australian number 1 Minaur, who is seeking his 11th singles win in 12 matches, and Auger-Aliassime, the highest ranked player in the entire week at number 6 in the world.
The Australians are looking to win the men’s tennis World Cup for the first time since 2003, when they beat Spain in the final in Melbourne, and they had arguably the most support at the José María Martín Carpena Sports Palace at the Spanish complex.