San Diego State Aztecs reached the Elite Eight for the first time after an upset win over a sloppy top seed Alabama Crimson Tide.
Carlos Alcaraz started strong in Miami after winning last week's Indian Wells title to re-claim the world number one ranking.
Bianca Andreescu toppled seventh seed Maria Sakkari, who exited the Miami Open second round along with Ons Jabeur and Caroline Garcia.
Second seed Jon Rahm failed to card one birdie in his final group match, confirming his premature exit with Billy Horschel progressing.