World no. 3 Roger Federer defeats Ryan Harrison 6-2, 7-6 (7-3) to reach the third round of the Sony Ericsson Open in Miami.
The Swiss third seed raced through the opening set, breaking twice and not facing a single break point.
The 16-time Grand Slam winner breezed through the first set but needed a tie break in the second before closing out the match in one hour 23 minutes.
Federer, who won at Indian Wells last week, will now meet Andy Roddick in the last 16.
This is the 24th career meeting against old rival Andy Roddick on Saturday as both men eased through the Miami Masters third round.
Federer of Switzerland, who has a 21-2 record against world number 34 Roddick, recorded his 23rd win of 2012 at Harrison expense.
Roddick, the 2004 and 2010 champion in Miami, dropped nine points on his serve and hit 10 aces to beat Luxembourg’s Gilles Muller 6-3, 6-2.
The American, who is at his lowest ranking since July 2001, disposed Muller in 74 minutes.
Fifth seed David Ferrer, who reached the 2005 and 2006 semi-finals, beat 19-year-old Australian Bernard Tomic 6-4, 6-4.
France’s Gael Monfils defeated Ukrainian qualifier Sergei Bubka 6-4, 6-4 in 78 minutes.
Monfils next faces Argentine 21st seed Juan Monaco.