Youngs stars in Tigers win
England scrum-half Ben Youngs nudged Leicester towards a Heineken Cup quarter-final place as his solo try in a 32-18 win stunned the Scarlets in Pool Five.
Youngs' 40-metre dash for glory, which followed an Alesana Tuilagi touchdown 10 minutes earlier, means a bonus point victory over Welford Road visitors Treviso next Sunday should be enough to see Tigers progress as group winners or one of two best runners-up.
England fly-half Toby Flood kept the scoreboard ticking with five penalties and a conversion for 17 points at a windswept Parc-y-Scarlets, although the home side led 10-6 at half-time following wing Morgan Stoddart's try.
Stephen Jones added two penalties and a conversion, while Sean Lamont claimed an injury-time touchdown, but the Scarlets ultimately proved unable to avenge a 46-10 drubbing in Leicester three months ago.
Tigers substitute Steve Mafi finished the Scarlets off with a 79th-minute try, although Lamont had the final word, albeit an irrelevant one.