American Jovic, 17, triumphed in Guadalajara while French 19-year-old Rakotomanga Rajaonah lifted the trophy in Brazil.

“For some reason he picked me. I don't know why, but I was happy to play.”

The Miami Open champion defeated Frances Tiafoe 6-1, 6-4 in the fifth and deciding match to put Czechia through to the Final 8 in November.

The Pepperdine University graduate hasn't lost a set in four matches thus far.

A disputed line call in the second set nearly threw the Frenchman off the rails in his eventual 7-5, 6-4 win.