Scarlets coach Nigel Davies knows his side need to beat Cardiff Blues and other results have to go their way to get into the Magners play-off places.
Currently sixth the Scarlets need to overcome the Blues and hope the Ospreys come unstuck in Aironi in order to move into the top four.
"We have certainly got a chance and that's key. We are still in the fight," insisted Davies
"But what we have to do is turn up Friday and put in a performance."
Davies concedes that the Blues have the luxury of already knowing they can just win and seal a play-off spot.
"They [Blues] are still in control of their destiny which we aren't. We are relying on others. We will have to wait and see what happens there," added Davies.
"What is important is that we finish our season on a high.
"We are not interested in having a say [in other results], we are interested in getting a result. If it means we finish in the top four: brilliant. But if it means we finish fifth instead of sixth: that's brilliant as well.
"The one thing we can do is turn up on Friday, put in a big performance and see what happens after that.
"It's great for everybody [it's gone down to the wire].
"From our point of view it is slightly frustrating that when we look back at some the opportunities we have missed in previous matches which have meant that we are not in control of what happens."
Davies is disappointed that certain results have not gone their way although the 37-29 victory in Glasgow on 22 April, which secured the region their place in next season's Heineken Cup, has given them half a chance.
Friday night's clash with the Blues will see Regan King playing his final game for the Scarlets before he joins Clermont Auvergne next season.
And Davies played tribute to the New Zealand centre's contribution to the region.
"He epitomises everything we try to do, certainly the style of rugby we are trying to play. His presence has been fantastic to our young development players, and they have certainly learnt a lot from him."
Davies also had praise for loose-head prop Iestyn Thomas who has been named in the Magners League team of the season.
"Delighted for Iestyn. I think it's just reward for a fantastic season," said Davies.
"He's not getting any younger but his performances are actually improving. His scrimmaging is second to none and his work rate around the field is second to none.
"He has been a great stalwart for us."
Scarlets: Morgan Stoddart; George North, Regan King, Scott Williams, Sean Lamont; Stephen Jones, Tavis Knoyle; Iestyn Thomas, Matthew Rees (capt), Rhys Thomas, Lou Reed, Dominic Day, Rob McCusker, Johnathan Edwards, Ben Morgan.Replacements: Emyr Phillips, Phil John, Peter Edwards, David Lyons, Richie Pugh, Martin Roberts, Rhys Priestland, Lee Williams.
Blues: Dan Fish; Jamie Roberts, Casey Laulala, Dafydd Hewitt, Chris Czekaj; Dan Parks, Richie Rees; Sam Hobbs, Gareth Williams, Taufa'ao Filise, Michael Paterson, Paul Tito (capt), Sam Warburton, Martyn Williams, Xavier Rush.Replacements: Rhys Williams, Tom Davies, Scott Andrews, Deiniol Jones, Ma'ama Molitika, Lloyd Williams, Ceri Sweeney, Harry Robinson.
Referee: Nigel Owen (WRU)