Scarlets ended their LV= Cup campaign with an encouraging 40-19 win over visitors Leicester on Sunday.
Both sides were missing internationals at Parc y Scarlets and neither were able to qualify for the semi-finals.
Thomas Waldrom and Andy Forsyth scores plus a penalty try saw the Tigers lead 19-15 at half-time.
Owen Williams' boot kept Scarlets in touch before Gareth Owen, Nic Reynolds and Andy Fenby crossed in a breathless last 10 minutes to stun Leicester.
It was the first defeat in 10 games for Leicester, a feat made even more impressive as Scarlets had 14 of their squad on international duty with a further 10 players out injured.
Scarlets: Gareth Owen; Kyle Evans, Nick Reynolds, Adam Warren, Andy Fenby; Owen Williams, Aled Davies; Rhodri Jones, Emyr Phillips (capt), Deacon Manu, Jake Ball, Johan Synman, Sione Timani, Lewis Rawlins, Kieran Murphy.
Replacements: Kirby Myhill, Shaun Hopkins, Deacon Manu, Richard Kelly, Duane Eager, Gareth Davies, Aled Thomas, Dale Ford.
Leicester Tigers: Mathew Tait; Scott Hamilton, Andy Forsyth, Matt Cornwell, Vereniki Goneva; Dan Bowden, Micky Young; Boris Stankovich, George Chuter, Logovi'i Mulipola, Rob Andrew, Harry Wells, Brett Deacon (capt), Richard Thorpe, Thomas Waldrom.
Replacements: Rob Hawkins, Ryan Bower, Fraser Balmain, Matt Hubbart, George Oliver, Sam Harrison, Andy Symons, Geordan Murphy.