In pictures – the best images of Leyton Orient v Arsenal

Leyton Orient fans are using every available vantage point to catch a glimpse of today's match – and the local housing block has come in particularly handy. They'll be hoping to see some famous names in the Arsenal line-up today ... Photograph: Stephen Pond/EMPICS Sport

Players like this one, whose name is, errr, Ignasi Miquel ... Arsenal's reserve team captain – of course Photograph: Nick Potts/PA

And this one: Kieran Gibbs, perhaps? Whoever it is he's jumping with Leyton Orient's Alex Revell Photograph: Toby Melville/Reuters

With hair like that it's hard to get this guy confused. It's Abel Xavier-lookalike Alex Song. Photograph: Stephen Pond/EMPICS Sport

Tomas Rosicky, wearing the No7 shirt, puts the Gunners in front with a header in the 53rd minute. Nicklas Bendtner supplied the cross from the right and Rosicky got ahead of his marker to apply a deft touch Photograph: Ian Kington/AFP/Getty Images

Both sets of players have probably been told the winner will face Manchester United in the next round. Arsenal seem intent on holding their opponents at bay rather than exercising their attacking skills. Here, Andrey Arshavin keeps Andrew Whing away from the ball Photograph: Shaun Botterill/Getty Images

Orient are a plucky side, though, and not lacking in creativity either. When Jonathan Téhoué skips between two players on the edge of the box one minute from full-time, he finds himself with a glorious chance to fire the Os level ... Photograph: Shaun Botterill/Getty Images

And he does! Only Manuel Almunia will know how that shot beat him. It was close enough for the Spaniard to get down to it, but he didn't react in time Photograph: Toby Melville/Reuters

Téhoué chooses to celebrate with the Orient mascot, while Almunia stands in shock Photograph: Shaun Botterill/Getty Images

Whing and his team-mates celebrate as the final whistle blows shortly afterwards. They're off to the Emirates for a lucrative replay – not to mention the trip to Las Vegas promised them by the Orient chairman Barry Hearn Photograph: Stephen Pond/EMPICS Sport

They'll be there at the Emirates. A replay was a richly deserved reward for Orient, too, it should be said Photograph: Stephen Pond/EMPICS Sport