Petra Kvitova defeated Varvara Gracheva 7–5, 7–6 in the Miami Masters 1000 round of 16 on hard court, confirming her status as pre-match favourite with odds of 1.53 to Gracheva's 2.71. The Czech left-hander secured a composed victory in straight sets, closing out the second set in a tiebreak to advance through the tournament's second week. Kvitova's win maintains her momentum on the Miami hard courts and sets up a quarterfinal appearance at one of the season's most prestigious events.