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News: Exeter close in on top six spot

The ESPN cameras will be at the Twickenham Stoop on the final day of the Aviva Premiership season to see if Harlequins can clinch a home semi-final with a win against Northampton - and they will also be at Sandy Park as Exeter look to guarantee themselves Heineken Cup rugby with victory over Gloucester.

After 21 pulsating rounds of action, we already know London Welsh will finish at the foot of the table while Saracens will have a home semi-final come the play-offs. But the exact line-up for the final four is yet to be confirmed and the Heineken Cup qualification picture is also incomplete.

Leicester and Harlequins are also assured of a semi-final berth with the second-placed Tigers currently leading the defending champions by four points. All Leicester need to do to cement their status is win their final match of the season against London Irish but Quins will be hoping they slip up. As things stand, Quins look set for a semi-final showdown with Leicester but should they lose to fourth-placed Northampton then the two sides would swap positions with a bonus point win also potentially enough to lift Saints into second.

The battle for fifth and sixth is also yet to be decided with those sides set to come to blows at Sandy Park. Gloucester hold a three-point advantage over Exeter and if the Chiefs win the match, they will keep their top six place. However, if they lose and Bath win, with Gary Gold's men taking on Saracens, then Exeter will drop out of the top six. But the seventh-placed club could still book a European berth if Saracens went on to claim this season's Heineken Cup.

Last round permutations:

• If Saracens win against Bath, they will finish top.
• If Saracens lose, but get a bonus point, and Leicester beat London Irish, Sarries will still be first due to matches won.
• For Leicester to finish top, they need Saracens to lose without obtaining a bonus point while the Tigers need a four-try victory over London Irish.
• If Leicester get no points against London Irish and Northampton or Harlequins get a win, with the Saints requiring a four-try bonus point, they will force their way into second.
• If Harlequins win or draw against Northampton, they will finish third and the Saints fourth. Saints must beat Quins to finish third.
• Gloucester have a top six spot secured and if they beat Exeter or draw, they will finish fifth. Exeter have their fate in their own hands, if they win against Gloucester, they will finish fifth or sixth, depending on bonus points, with Bath seventh.
• If Exeter fall to Gloucester, without picking up at least two bonus points, and Bath beat Saracens, then Bath will be sixth. There could yet be a lifeline for Bath if they finish in seventh as if Saracens win the Heineken Cup, then qualification for the tournament will include the seventh-placed side which will be Gold's men.
• Wasps can still force their way into the Heineken Cup but it will be on ERC rankings - they need French winners in both the Amlin Challenge Cup and the Heineken Cup and if that happens, due to their ranking, they will get the nod for next season.