London 2012 Olympic hockey: Britain v Argentina - in pictures

A bit of solitary flag waving as the teams line up Photograph: Graeme Robertson for the Guardian

Here are some more patriotic fans Photograph: Graeme Robertson for the Guardian

Argentina's Pedro Ibarra and Britain's Ashley Jackson tussle for the ball Photograph: Graeme Robertson for the Guardian

Ben Hawes attempts to stop a marauding Argentinian Photograph: Graeme Robertson for the Guardian

A tense looking crowd watch proceedings Photograph: Graeme Robertson for the Guardian

The atmosphere lifts midway through the first half after Barry Middleton lashes the ball home to give Britain the lead Photograph: Graeme Robertson for the Guardian

No swathes of empty seats at the Riverbank Arena and the fans that are here see Britain take an increasingly solid grip on the game Photograph: Graeme Robertson for the Guardian

This is demonstrated just after the break when Middleton celebrates after getting his, and Britain's second goal. It was another nifty finish – he delivered a reverse stick drive straight through Vivaldi, the Agentina goalkeeper Photograph: Graeme Robertson for the Guardian

Things are getting a bit tasty out there as Matt Daly collides with Ibarra Photograph: Graeme Robertson for the Guardian

Harsh words for Daly from Juan Lopez after what he thought was a harsh tackle Photograph: Graeme Robertson for the Guardian

Early in the second half Smith again finds himself on the end of a set play and he delivers a clinical finish past Vivaldi to put Britain out of sight at 4-0 Photograph: Graeme Robertson for the Guardian

Middleton cuts a dash through the Argentinian defence Photograph: Graeme Robertson for the Guardian

The British players enjoy their 4-1 victory which puts them second in Group A Photograph: Graeme Robertson for the Guardian