Postpublished at 13:19 British Summer Time 25 June 2014
A hold for Murray, but Blaz made him work for it - takes him to deuce with a brace of whipcrack forehands, only for the first ace of the day - 124 mph - slams the door shut.
Replay: Watch a selection of today's matches using the 'Live Coverage' tab
Matches include Murray v Rola, Djokovic v Stepanek and Kvitova v Bartel
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Relive day three in the live text below
Mike Henson, Lawrence Barretto and Tom Fordyce
A hold for Murray, but Blaz made him work for it - takes him to deuce with a brace of whipcrack forehands, only for the first ace of the day - 124 mph - slams the door shut.
Lawrence Barretto
BBC Sport at Wimbledon
"Almost every inch of the hill is packed with people and their picnic blankets and there's a huge roar when Andy Murray appears on the big TV screen as he walks out into Court One for his second round match with Blaz Rola.
"Most people are just finishing off their lunch, tucking into a bowl of strawberries and cream or sipping a fruit-based beverage, you know the one.
"And better still, the sun has just come out after the chilliest morning we've had this week."
Timothy Nicholson:, external My brief tennis career highlight was definitely the 20-stroke rally I had against a brick wall. Harder than it looks.
Sarah Donnelly:, external Beating my bro-in-law. Ok, so he double faulted about 100 times but it still counts as a win!
Matthew Harris:, external The peak of my tennis career is taking the wall to a tie-break in the first set.
John Lloyd
Former British number one on BBC TV
"I live in the States, and Andy Murray has always been popular there because people like the brand of tennis he plays - there's so much variety in it. He became a crossover star in the States. It was a big reaction.
"He's got a great record against left-handers, partly because he's had so much practice playing against his brother Jamie. He might not have seen much of Blaz Rola, but he can adapt well to a new opponent. If he needs to change his gameplan, he's briliant at doing that. I'd be surprised if he loses a set today, but if he does, he's still going to win this match."
Rola may have won just five Tour-level matches in his life, but as a long-armed leftie he is not without weapons. White cap, baggy t-shirt, baggy shorts and something of a baggy start - double-fault, forehand long, Murray with a sizzling backhand cross-court. Break taken, inauspicious start for the world no.92.
Virginia Wade
1977 Wimbledon champion on BBC TV
"In the end it was a very well done job by Li Na. Once she decided she had to take more time to get rid of the errors and find the right opportunity to go for winners, she played beautifully.
"At the start it took her time to get used to the lack of pace from Meusberger but she was great when she came to the net."
Chinese second seed Li Na is the first singles winner of the day.
Yvonne Meusburger falls victim in a hour and nine minutes, leaving behind a scoreline of 6-2 6-2.
Anne Keothavong
Former British number one on BBC TV
"I think Venus will always be dangerous, particularly on grass courts, because she has such a big serve, although we haven't seen that so much in this game - it's almost as if she's been holding back.
"She can play great tennis as we saw when she won in Dubai beating Alize Cornet - which was her first title since being diagnosed with Sjogren's disease, which affects the energy levels and the muscles, and causes shortness of breath. She's had to adapt her training regime and her diet.
"She has to avoid sugar - and I admire people who can avoid sugar. She can still win big titles, but Wimbledon? I'm not so sure."
Nara 6-7 (4-7) 1-3 V Williams: Venus Williams finally puts the first set to bed and is ahead in the second
K Skupski & N Skupski 7-5 3-6 3-4 D Brown & J Struff: One set all and the legs to run and run out on court four where the Skupski brothers are keeping the British flag flying.
E Gulbis 4-6 3-6 2-3 S Stakhovsky: Sergiy Stakhovsky is closing in on the second win against a top-ten player of his career - his first was against Roger Federer at Wimbledon last year.
Not particularly. Slovenian 23-year-old Blaz only joined the tour on a full-time basis last year after a successful career in American college tennis, and is playing in only his third senior tournament on grass.
"When I saw the draw, when I saw that potentially I could play the second round against Andy, my motivation was off the charts," he says. You speak for us all, Blaz.
Thank you Mr Mike Henson - Fordyce with you for this second round clash between Britain's reigning champion and a man who sounds like a one-hit UK garage act from 2001.
Kim Sears has taken her Court One seat and more importantly Tom Fordyce is here to take you through the whats and wherefores of Murray v Rola.
All yours Tom...
One star we are yet to see this year is the Centre Court roof.
I sense it is a bit like a convertible car. It is all fun and games the first few times when you fold it back, and then the novelty wears off and you realise it is a bit hassley.
The forecast suggests that we may get a chance to pull the lid across over the next three days.
Centre One is filling up nicely, plenty of chatter and hum around the stands as they wait for Andy Murray v Blaz Rola.
Centre Court's patrons are also finding their seats ahead of Australian Casey Dellacqua against fourth seed Agnieszka Radwanska.
Ten minutes until the off in both.
Andrew Castle
Former British number one on BBC TV
"If Venus Williams could find any kind of gear, she would race through. But she's nervous and Kurumi Nara is going nowhere. It's a fascinating match. Venus may be a five-time Wimbledon champion, but no one is immune to getting nervous."
Virginia Wade
1977 Wimbledon champion on BBC TV
"I have a feeling the same thing is happening to Li as happened in the first set where she sometimes gets frustrated and tries to do too much.
"Neither player has enough variety to make it stimulated for the other so you have to hang in there and sometimes I get the feeling that Li Na doesn't want to do that."
Meusburger 2-6 2-3 Li: The Chinese second seed is a set to the good, and has just broken in the second. She is motoring nicely though.
Nara 6-6 V Williams: Venus Williams is caught up in a bit of a dog-fight at the backend of the first set.
J Murray/ J Peers 6-2 6-4 0-1 D Evans/ J Ward: Jamie Murray, with a little help from Aussie John Peers is winning the battle of the Brits on court four.
Lawrence Barretto
BBC Sport at Wimbledon
How hard will it be for Andy Murray to defend his title? Well 2001 Wimbledon champion Goran Ivanisevic believes it will be "much easier" than having to win it for the first time.
"He won it last year, so I think it will be much, much easier for him to defend the title because whatever happens to him, he can still say he's Wimbledon champion," said the 42-year-old who currently coaches 26th seed Marin Cilic.
"I think the pressure will be less, because now Britain has a Wimbledon winner."
Chris Wood:, external Highlight of my tennis career? My perfect grass record of 1 and 0 on grass. Not even Federer can boast that!
Tim Miller:, external I peaked with a return winner to a shoulder-high first serve, double-handed backhand down the line during a doubles match. Neither opponent moved.
Tim Henman
Former British number one on BBC TV
"Grigor's emergence is like when Andy Murray came through from the junior ranks. There was a lot of attention on him but he didn't have the physique to cope with it.
"You can see how strong Grigor is getting now and when he gets stronger it will help his shots and movement and it will help his game.
"He has been on the tour for a few years and you learn from that and he now looks more comfortable out there and although his results in GS haven't been great, he is still waiting for the big breakthrough."
Grigor Dimitrov v Luke Saville is second on Centre Court today.