Williams, 32, started with two double faults, helping Ivanovic to three break point
chances, but she saved them all and regrouped.
Del Potro had break point
on the Djokovic serve at 2-2 only for the Serb to come up with a huge ace and hold before it was the turn of the Argentine to feel the heat.
Llodra saved two break points
when serving at 4-3, finally closing the game out with the aid of a net-cord, and they forced a break point
and set point on Troicki's serve.
The second set was a different story, though, as Murray netted to surrender his service on the first break point
he and Huber had faced in the match.
Lacko saved yet another break point
at the start of the third set, but it was only a matter of time.
Federer broke back to take the first set on a tie-break then gained an early advantage in the second set when a lucky bounce off the net cord helped him convert a break point
Robredo recovered his composure in the third set and, after surviving a break point
early on, he struck in the 10th game to give himself hope of pulling off an unlikely comeback.
Berdych had certainly settled down now and forced another break point
with Murray serving for the set, but the Scot again held firm to come through.
Fish had lost just one service game at SW19 but that proved no obstacle to Nadal, who took advantage of his rival's move to the net on break point
in the first game with a big forehand.
The first five games went with serve, but Murray gained an advantage in the sixth when, facing the first break point
of the match, Djokovic put a forehand long to gift his opponent a 4-2 lead.
Verdasco held a break point
at 5-5 but netted a volley, before Murray controlled the tiebreak, building a 6-2 lead before closing out the match by winning a protracted rally.
Murray won the next two games to serve for the set but it was Moodie who put himself in pole position by claiming triple break point
and broke back when the Scottish teenager put a second serve well wide.