Tigers needed a bonus-point win over Harlequins and for Sale to lose at home to London Irish and kept their side of the bargain with a last-gasp 31-28 win at Welford Road.

And with Sale losing 17-7 at Edgeley Park, Marcelo Loffreda's side snuck into fourth place and secured a semi-final clash with top of the table Gloucester.

The Tigers were trailing by four points with three minutes to go until Tom Varndell's try, which Andy Goode converted, snatched an unlikely win.

Gloucester beat Bath 8-6 at Kingsholm but there were major injury concerns for watching England boss Martin Johnson.

Gloucester centre Mike Tindall, Bath prop Matt Stevens and his front-row colleague Lee Mears all failed to last the distance of a punishing encounter.

Johnson and Rob Andrew are due to announce a 32-man squad for next month's New Zealand tour on Tuesday.

Wing James Simpson-Daniel's 34th-minute try shaded an intense encounter, consigning Bath to third spot and a daunting semi-final away to Wasps.

Gloucester-bound Olly Barkley booted two penalties for the visitors.

Wasps continued their blistering end-of-season form with an all-important bonus-point win, 45-28, against already-relegated Leeds.

The outgoing European champions scored six tries in a rampant display as Fraser Waters, Raphael Ibanez, replacement Joe Ward and a treble from England wing Tom Voyce sealed the points.

Lawrence Dallaglio's men ended the regular season with nine wins from their final 10 league games and Leeds offered little resistance to halt the Wasps charge.

Sale's Premiership play-off hopes lay in tatters as London Irish produced a stirring display.

The Sharks were 12-0 down at the break after tries from wing Topsy Ojo and centre Seilala Mapusua.

Mapusa claimed his second in the closing stages and, although replacement Chris Bell replied late on for Sale, the hosts had long since surrendered the points.

World Cup winner Richard Hill headed into retirement with a 25-20 victory in his 288th and final appearance for Saracens.

Hill, 34, received a tremendous ovation from the fans but it looked as though his farewell was going to be ruined by Bristol's powerful 19-year-old centre Luke Eves, who struck with two tries as Bristol led 20-18 going into the last minute.

But wing Kameli Ratuvou outpaced the visiting defence to race over in the left-hand corner for a last-gasp winning try.

Fly-half Alex Goode, making his debut, converted with the final kick of the match to complete a 10-point contribution, with two penalties and two conversions.

It was an occasion for the players saying their final farewells at Sixways as Worcester beat Newcastle Falcons 51-10.

South African full-back Thinus Delport, prop Tony Windo and fly-half Shane Drahm were all involved in the try feast that saw the troubled Falcons torn to pieces.

And the victory sent a signal to Bath that the Warriors will be no pushovers when the two meet in the European Challenge Cup final at Kingsholm in a fortnight.