Roger Federer and top-seeded countryman Stan Wawrinka eased into the fourth round of the Miami Open.
Former world number one and 18-time grand-slam champion Federer accounted for Juan Martin del Potro in straight sets on Monday.
Fellow Swiss Wawrinka also made light work of Malek Jaziri at the ATP 1000 tournament.
Nick Kyrgios overcame big-serving Croatian, while David Goffin ousted Diego Schwartzman.
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