Agnieszka Radwanska has lost the second set to Tsvetana Pironkova 4-6. Pironkova's been a thorn in her side at Slams, and now 'Aga' is forced to a third!
Karlovic is the third-highest of all time for most aces in a match, at 78. He could surpass that record today. The record still stands with John Isner though, who leads with 113. Right behind him is his rival in the pair's epic match - Nicolas Mahut, who has 103.
Third seed Agnieszka Radwanska's now on court, against an opponent who beat her the last time they met - at the French Open in 2016 - Tsvetana Pironkova!
You really have to feel for Ivo Karlovic and Horacio Zeballos here. Their match has gone on for nearly 5 hours now, and they're locked in a mammoth tiebreak in the fifth set.
Right now, the points are coming Verdasco's way more or less because of errors by Djokovic. It's feeling more and more like the Spaniard is just biding his time, waiting to finish. Djokovic is now just one game away from progressing to Round 2.
Meanwhile, Djokovic has a 4-1 lead in the third - and what looks to be the final - set. Verdasco has been a fiery, if mercurial presence here, and although he looked incredibly threatening on multiple occasions, he just was not able to build on it. Crucial errors - and perhaps his own temper - have let him down here.
Verdasco has held serve once in this match; and at 3-1, Djokovic is looking a bit tired but wanting to finish this off. Verdasco is visibly irritated here, and unfortunately that frustration translates into him netting what would've been an otherwise good return.
We've seen Novak Djokovic hit forehand drop shots before - but this time he hits it OVER Verdasco's head. He leads 3-0 now and it's looking like it's coming undone for the Spaniard here...
Third set now underway, and Djokovic straightaway takes the break to lead 2-0. One can't help but feel for Fernando Verdasco, who is visibly frustrated after an excellent attack does not go his way. He looks as though he has given up a little bit.
Fernando Verdasco commits some errors, sending a couple of shots long - and after giving Djokovic a royal scare in the second set, he loses it in the tiebreak.
Novak Djokovic leads two sets to love, 6-1, 7-6(4)
Verdasco's pushing Djokovic to the wall here, sending him running across the court with some well-placed shots. But he errs there, and sends a shot long to give Djokovic a 3-0 lead.
....wait, make that 3-1. There's another one of those rallies right there, and Verdasco has decided to make Djokovic exercise a bit more. He trails 2-3 now.
Fourth deuce - and finally, an agitated, on edge Verdasco wins that with a long shot from Novak Djokovic! He leads 6-5, with Djokovic hoping to take this to tiebreak.
Fernando Verdasco looks more than a little angry here, and he's losing his lead. Djokovic has leveled up for 5-5 , and Verdasco is sending some routine shots long.
And it's now dead even at 4 games all. Not as one-sided as the first set, certainly, with some good stuff from Fernando Verdasco. But although he's applying the pressure on Djokovic, he's unable to hold on to leads and breaks here.
The players are now an even keel, as Verdasco leads 4-3 with Djokovic on serve. The Spaniard looked threatening early on, but right now he's missing out quite a bit. That said, Verdasco's putting quite a bit of pressure on and Djokovic is committing a number of unforced errors.
