The first round in Texas was not completed due to fog and darkness, but 51-year-old Irishman Padraig Harrington offered the highlight.
Carlos Alcaraz made light work of Taylor Fritz, as he seeks to become the eighth male to win the Sunshine Double.
Daniil Medvedev is chasing a fifth straight ATP Tour final after reaching the last four in Miami, improving his 2023 record to 27-3.
Justin Verlander was set to line up for the New York Mets for the first time on Saturday but has been ruled out.