Rublev, Kygios, Cilic are all viable underdogs.
Kygios 3 -1 vs Medvedev but not favored in a 5 set . If Kygios controls his temper he can perhaps win, but the stamina may be an issue. Med has the better tank.
The match is at 7pm so that means it wont burn out Kygios as it normally would. i notice he blows up in those hot arenas like miami during the daytime sun.
Cilic has 1-2 vs Alcaraz but its a hard court where Carlos won both times. live bet
Rublev 1-1 vs Norrie can be a pickem, live bet type match.
I like Kygios the most, he's rising in stock and has moved up in rank, seems to be in a good groove.