World tennis number ones Serena Williams and Rafael Nadal have comfortably booked their places in the third round of the latest Masters tournament with victories at Key Biscayne in Florida.
Nadal's game was preceded by a flamenco dancer on the stadium court, but there was little need for fancy footwork from the Spaniard as he enjoyed a routine 6-2 6-2 win over Russian Teimuraz Gabashvili.
Nadal will now face Portugal's Frederico Gil in the next round.
Williams, searching for her sixth win at Key Biscayne, did not sparkle but still had little trouble in her 6-2 6-3 victory over compatriot Alexa Glatch.
Williams will now play China's Peng Shuai, seeded 32nd, who beat Italian Mara Santangelo 7-5 6-3.
Serena's sister Venus got off to a slow start but found her form to defeat spirited Israeli Shahar Peer 6-3 6-3 and ensure a meeting with German Anna-Lena Groenefeld in the next round.
In the men's event, fourth-seed Britain's Andy Murray had to graft for his 4-6 6-3 6-2 win over Argentine Juan Monaco.