Wasps kicks us off at the Ricoh Arena.

Excellent turn out in Coventry today. 

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James Haskell leads out the hosts, as Gareth Steenson runs out the Chiefs players.

Great noise at the Ricoh Arena. Exeter will have you believe it's all their lot. 

Wasps certainly have the upper hand when it comes to European experience.

They are two-time Heineken Cup winners (2004, 2007) and are in the knockout stages for the second consecutive season.

For Chiefs, it's the first time they have found themselves vying for a spot in the last four of Europe’s top club competition.

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Captains James Haskell and Gareth Steenson have arrived for the coin toss.

Wasps' Haskell definitely had time to get rid of those massive headphones before doing it...

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Exeter have a near-full squad to choose from, although full-back Phil Dollman misses out with a calf injury.   

Chiefs XV: Lachie Turner; Jack Nowell, Henry Slade, Ian Whitten, Olly Woodburn; Gareth Steenson (capt), Will Chudley; Ben Moon, Luke Cowan-Dickie, Moray Low; Mitch Lees, Geoff Parling; Don Armand, Julian Salvi, Thomas Waldrom.

Replacements: Jack Yeandle, Alec Hepburn, Harry Williams, Damian Welch, Dave Ewers, Dave Lewis, Michele Campagnaro, James Short.

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Wasps are captained by England flanker James Haskell, while Charles Piutau and Dan Robson have both recovered from injury to take their place in the backline.

There is also a welcome return for scrum-half Joe Simpson, who is named on the bench after recovering from an ankle injury which has kept him out since January.

Wasps XV: Charles Piutau; Christian Wade, Elliot Daly, Siale Piutau, Frank Halai; Jimmy Gopperth, Dan Robson; Matt Mullan, Carlo Festuccia, Jake Cooper-Woolley; Joe Launchbury, Kearnan Myall; James Haskell (capt), George Smith, Nathan Hughes.

Replacements: Ashley Johnson, Simon McIntyre, Lorenzo Cittadini, Bradley Davies, Thomas Young, Joe Simpson, Ruaridh Jackson, Rob Miller 

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But where can you listen to this wonderful afternoon of Champions Cup rugby, I hear you cry?

BBC Radio 5 live sports extra's coverage of Wasps v Exeter has begun, and Saracens v Northampton follows later. Click the live coverage tab on this page to listen.

There's also local radio commentaries available for both games. You'll find all the listings here.

Exeter went into their final Pool Two game in third place, five points off the top. They needed to beat Ospreys and hope Clermont Auvergne lost against Bordeaux-Begles.

The Chiefs did their bit, winning 33-17 against their Pro12 opponents, but for a while after the final whistle no one was really sure of the permutations - or who had qualified.

When news came through that Bordeaux had somehow overcome the 2015 finalists, Sandy Park and its head dress-wearing occupants went wild. 

Image source, Getty Images

Image source, Getty Images

Oooh, we do love it when a tournament gets to the knockout bit.

But the group stages of the Champions Cup also served up some brilliant drama. 

Title-holders Toulon had gone into the final round of games as Pool Five leaders, but Wasps leapfrogged them to finish top on points scored in their two meetings. 

The Premiership side finished the pool in style, too, by battering poor old Leinster 51-10.

No, you're not mistaken. This is the European Champions Cup. 

It just so happens the English are ruling the joint this year. 

We've got two all-Premiership ties for you today - with a place in a European semi-final at stake.

First up, those pesky Wasps against Devon's favourite underdogs Exeter Chiefs.

Image source, Getty/Rex