Australian John Millman didn't drop a single point on his serve during the second set of his Miami qualifying final round match against promising Ernesto Escobedo.
The Australian clinched a dominant 6-1 6-2 over the 21-year-old to book a spot in the Miami main draw.
Millman, 28, served out four games to love and broke Escobedo twice on his way to clinching a 6-2 second set win.
The Australian won 9-of-9 of his serve points during the second set and 7-of-7 of his second serve points, respectively.
Millman, who debuted in the Miami main draw in 2016, is now set for his second main draw appearance at the event.
The 27-year-old defeated promising Norwegian Casper Ruud in the qualifying round one before he saw off Escobedo.
In his lone appearance at Miami in 2016, world No. 96 Millman beat Spaniard Pablo Carreno Busta in round one before he lost to Uruguay's Pablo Cuevas in round two.
Millman is due to meet Gernan Peter Gojowczyk in round one.