Andy Murray, wearing a woolly jumper so big it suggests he thinks a sudden cold front is unexpectedly on its way, is jumping up and down like a madman at the side oft he court. Who'd have thought all this at two sets down?

Ward plays a magnificent forehand from an impossible angle - how did he not break his wrist? - to give himself a matchpoint. 30-40.

After missing his first serve, Isner saves it, though, with a huge overhead volley.

Ward forces another matchpoint, but Isner saves it with a huge serve. Isner has a gamepoint, but misses - a lame forehand into the net. Does anyone fancy winning this game?

Turns out Isner does. Eventually. It's 5-5, Ward to serve.

At the risk of jinxing it big-time, James Ward looks the better player here, and definitely the fresher too.

The 28-year-old has just held with ease - 40-15 - and leads 5-4. If he gets a breakpoint this game, like he did last, it will be a matchpoint.

Big pressure on Isner.

Bit of Blur's Song 2 bellows around the Emirates Arena. Crowd are going wild. This is fantastic stuff.

There was a great shot of a ball-boy wiping his eye during that game and looking like he was stifling a yawn.

Can't be from from boredom, must be that he's exhausted too - and little wonder given how long this game has done for. It'll be past the lad's bedtime soon.

Image source, Getty Images

Isner holds serve, but again it's close - Ward securing a breakpoint but failing to take it. 4-4. ward to serve. Ball-boy, concentrate.

Couple of thumping backhands from James Ward in the seventh game of a fifth set which continues to go with serve.

Ward had a glimmer of a hope of breaking the Isner serve at 3-2 but the big American summoned some energy and just about held.

It's 4-3 Ward, the Glasgow crowd are loving it. All to play for in this thriller of a Davis Cup match.

Manchester United defender Jonny Evans has denied a Football Association charge after allegedly spitting at Newcastle's Papiss Cisse in Wednesday's Premier League match, and the FA says a hearing will be held tonight.

No idea how he has the energy to do it but James Ward has just sprinted full pelt to reach a John Isner drop shot in a Davis Cup match which is turning out to be an absolute classic.

Image source, Getty Images

It's now 3-2 Ward in a final set going on serve. If Ward wins this from two sets down he deserves to be knighted, have a postbox painted gold in his home town, and - most of all - a large, cold beer.

American footballer Abby Wambach admits women's sports has made slow progress.

Image source, Getty Images

"I will admit that the growth of women's soccer and women's sports all around the world has been slow," the striker, who is competing in the Algarve Cup, told BBC Sport.

"I would love to see the sport (women's football) grow worldwide. I'd love to see more money being given to some of these women professional soccer players, so they don't have to hold another job."

Piers Newbery
BBC Sport at Emirates Arena, Glasgow

"The comeback is well and truly on as James Ward wins the fourth set tie-break to force a deciding set against John Isner.

"The Briton is playing well above his ranking of 111, and Isner - the world number 20 - is struggling to win points if he doesn't hit a big serve. The next set could go a very long way to deciding the tie."

James Ward has fought back to two sets all against John Isner in Glasgow so Great Britain could go two matches up in their Davis Cup encounter with USA.

As a result of the ongoing drama, this live text is going into extra time and will continue.

Great Britain lead what is their first World Group match on home soil in over 12 years after Andy Murray eased to victory this afternoon.

Anyone else looking forward to Jessica Ennis-Hill taking on Katarina Johnson-Thompson at Rio 2016?

Image source, Jessica Ennis-Hill twitter

Earlier, Johnson-Thompson won pentathlon gold at the European Indoor Championships with a British record.

We have an absolutely blinding European football day planned for you from 14:00 GMT on Saturday as the big boys in the Bundesliga are all in action before Real Madrid play at 17:00 GMT.

Bayern Munich travel to Hannover with an eight-point Bundesliga lead over Wolfsburg, who face a trip to Augsburg.

Both of those games will feature in the live text as will Borussia Dortmund's match at Hamburg, with Jurgen Klopp's side back on form and hunting what once looked like an unlikely place in the top four.

After that, the live text will turn its attention to San Mames where Real Madrid go to Athletic Bilbao with a one-point La Liga lead.

League One Bradford City could return to Wembley with victory over Reading, less than 12 months after they contested the League Cup Final at the home of English football.

The Bantams have already knocked out Premier League sides Chelsea and Sunderland to reach the last eight but their manager Phil Parkinson will have to beat a side he represented 361 times to secure a Wembley semi-final.

"I had a fantastic period there and I'm very honoured to be a part of the club that moved from Elm Park to the Madejski Stadium, and to have seen the club develop," says Parkinson, 47. "They've been in the Premier League twice in the last nine years and they're a great model for a lot of clubs to look at."

The Bantams have not reached the semi-finals since they won the trophy in 1911.

The four FA Cup quarter-finals throw up the typical plethora of stories, hopes and will as always lead to at least some dashed dreams.

Saturday's late kick-off between Midland's rivals Aston Villa and West Brom sees two sides who have experienced long waits for FA Cup glory go head-to-head.

• Only three clubs have lifted the FA Cup on more occasions than Aston Villa, who have won the trophy on seven occasions. Their seven FA Cup wins came between 1887 and 1957.

• West Brom have won the trophy on five occasions, though not since 1968

The match is live on BBC One and there will be a live text commentary on the BBC Sport website with tweets, pundit quotes and all the FA Cup funnies you ever need.

All-rounder Samit Patel says he still has ambitions of playing for England after signing a new three-year deal at Nottinghamshire.

Patel, 30, made his Notts debut at the age of 16 in 2002 and has played for England in all formats, but his last international appearance came in 2013.

"Spending such a long time at a club the size of Notts is an honour, and I didn't think twice about extending my contract," Patel said. "I still harbour England ambitions and playing with Nottinghamshire will give me the best chance of doing that."

Image source, AP

Despite her European Indoor pentathlon gold, Katarina Johnson-Thompson cut a frustrated figure after running just over two minutes 12 seconds in the final event, the 800m. Why? Because a run over just over a second faster would have broke the world record for the six-discipline indoor event.

"This is a huge breakthrough," she told BBC Sport. "But I am full of regret from the 800m. "I thought I could easily run that time and maybe took it for granted. It could've been a different story. I should've been able to do that."

Katarina Johnson-Thompson, 22, decimated the field to take European Indoor Championship gold in the pentathlon earlier but just how good are the 5,000 points she amassed?

• The tally is a British record, eclipsing the 4965 Jessica Ennis-Hill set in March 2012

• Only two women, Katarin and Natalya Dobrynska have ever reached 5,000 points

• Her long jump leap would have won six of the previous seven individual titles at the European Championships

• Her high jump effort broke Carolina Kluft's championship record.

Image source, Getty Images

Real Madrid manager Carlo Ancelotti has been fielding questions today on Gareth Bale v Cristiano Ronaldo and which of the Galacticos takes the club's free kicks.

Bale from the right Ronaldo the left was his response and former Wales international Ryan Giggs sympathises with the scrutiny Bales faces at Madrid.

"That's part and parcel of playing at a big club, you see Ronaldo under pressure because he hasn't scored for three games," says Bale. "That's the sort of scrutiny you're under at a top team. Gareth's been brilliant since he's gone over there.

"I went through it, all players go through it where you face stages in your career where you've got to dig in. You become a better player because of it."

Piers Newbery
BBC Sport at Emirates Arena, Glasgow

We have a match on our hands as James Ward breaks the Isner serve and goes on to take the third set and trail 6-7 5-7 6-3. The Londoner helped Britain to a 2-0 lead on day one against the US last year and there is renewed hope that he can do the same again here. The Proclaimers reverberate around the Emirates Arena, not for the first time today, and the home crowd are on their feet.

Andy Murray won Great Britain's opening point and they lead 1-0 overall with doubles action to come tomorrow.

Image source, AP

Manchester United coach Ryan Giggs has told BBC Sport he has a "great working relationship" with manager Louis van Gaal after speculation of rift between the two.

Giggs did not celebrate United's late winner at Newcastle in midweek and afterwards, ex United midfielder Paul Scholes has questioned whether Giggs would have the patience to be Van Gaal's number two for too long.

"It's coming to that part of the season where the media will just look at any little thing just to make it more interesting and exciting," says Giggs. "Me and Louis have got a great working relationship and he's given me a massive opportunity and I'm taking it."

Image source, Reuters

Ligue 1 top scorer and France international Alexandre Lacazette will not be sold at the end of the season, according to Olympique Lyonnais president Jean-Michel Aulas.

Lacazette, who has netted 21 league goals this season, said on the club's TV channel on Thursday that "if the president asks me to leave, I'll have to leave the club," after speculation linked him with a move to a top European club.

"Impossible," Aulas posted on his Twitter account.