World number one Nadal, a three-time runner-up in Miami, took just 59 minutes to thrash Uzbek Denis Istomin 6-1 6-0 at the ATP 1000 event.Nadal converted six of seven break points in an impressive display, and the 13-time grand slam champion believes his movement is improving after a back injury suffered in January. "I played a very complete match," he said. "No mistakes, serving with good percentage, and playing a lot of winners. My movements were better than what I did at last events." Despite having never won the Sony Open, he will be looking to reach the quarter-finals for the seventh straight time when he takes on Italian Fabio Fognini. The Italian 14th seed battled past Spaniard Roberto Bautista Agut 4-6 6-3 6-3 in just over two hours. Swiss third seed Wawrinka equalled his best result at the tournament, reaching the round of 16 with a 7-5 6-4 victory over Frenchman Edouard Roger-Vasselin. An entertaining fourth-round meeting with Alexandr Dolgopolov awaits Wawrinka. The Ukrainian 22nd seed recovered from being a break down twice in the third set to get past Serbian lucky loser Dusan Lajovic 3-6 6-0 7-6 (7-5). Dolgopolov is in good form having reached the semi-finals at Indian Wells, and he holds a 2-1 head-to-head record over Wawrinka – although Rome last year was a walkover in his favour. Czech seventh seed Tomas Berdych was untroubled in a 6-2 6-4 victory over Portugal's Joao Sousa. Berdych will meet 10th seed John Isner after the big-serving American sent down 17 aces in a 7-5 6-3 win against Spanish 18th seed Nicolas Almagro. Canadian 12th seed Milos Raonic blasted his way past Spaniard Guillermo Garcia-Lopez 6-1 6-2 in 56 minutes and will meet German Benjamin Becker after the lucky loser was too good for Slovenian qualifier Aljaz Bedene 6-3 7-5.
Rafael Nadal progresses swiftly in Miami
By Sportal Follow
Rafael Nadal took under an hour to progress at the Sony Open as Stanislas Wawrinka joined him in the fourth round on Monday.