Champions Cup Weekend Guide: Can Aviva Premiership sides repeat their successes in Round Four?

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Aviva Premiership teams came out on top at the midway stage of the inaugural European Champions Cup last week with wins for Leicester, Harlequins, Saracens, Wasps and defending Premiership champions Northampton Saints.

Round Four is the second leg of a double header, meaning another chance to witness the excitement of those same fixtures all over again. Sportsmail's Nik Simon gives his verdict on the weekend's games...

GLASGOW v TOULOUSE

(Saturday: Scotstoun Stadium, 1pm — Pool 4)

Richie Vernon returns to the Glasgow midfield for their clash with Toulouse

Flanker-turned-centre Richie Vernon comes into the Glasgow midfield, with Tim Swinson and Ryan Wilson both starting in the pack. Cash-rich Toulouse are able to call on the experienced trio of Yoann Huget, Gurthro Steenkamp and Thierry Dusautoir.

PREDICTION: Home win.

NORTHAMPTON v TREVISO

(Saturday: Franklin’s Gardens, 3.15pm — Pool 5)

Jim Mallinder makes eight changes as a raft of internationals — Dylan Hartley, Courtney Lawes, Tom Wood and George North — return to starting XV. Kahn Fotuali’I, James Wilson and George Pisi come in at the expense of England backs Lee Dickson, Luther Burrell and Ben Foden.

PREDICTION: Home win.

TOULON v LEICESTER

(Saturday: Stade Felix Mayol, 3.15pm — Pool 3)

Martin Castrogiovanni (right) has been dropped by Toulon after his foul mouthed tirade against Leicester

Martin Castrogiovanni is dropped by Toulon after his expletive-laden outburst last week, Delon Armitage starts on wing to accommodate return of Leigh Halfpenny. Geoff Parling, Robert Barbieri and Leonardo Ghiraldini are named in the Leicester pack.

PREDICTION: Home win.

SARACENS v SALE

(Saturday: Allianz Park, 5.15pm — Pool 1)

Owen Farrell is switched to fly-half, with American Chris Wyles returning to midfield. Steve Diamond makes eight changes to the visitors’ line-up as Danny Cipriani is left out. Club captain Dan Braid is among the players returning to the starting XV.

PREDICTION: Home win.

RACING METRO v OSPREYS

(Saturday: Stade Yves-du-Manoir, 5.15pm — Pool 5)

South African fly-half Johan Goosen keeps his place in the Racing Metro backline for the game with Ospreys

South African Johan Goosen is only survivor from Parisian back-line of last week, as Wales centre Jamie Roberts starts alongside Juan Imhoff, Teddy Thomas, Brice Dulin and Maxime Machenaud. Ospreys newcomer Dan Lydiate won’t feature against old club.

PREDICTION: Home win.

LEINSTER v HARLEQUINS

(Saturday: Aviva Stadium, 7.45pm — Pool 2)

England skipper Chris Robshaw and Kiwi fly-half Nick Evans both miss out for unbeaten Quins. Jack Clifford comes into back row and Tim Swiel starts at No 10. Dominic Ryan, Kane Douglas, Isaac Boss and Zane Kirchner are promoted by Leinster.

PREDICTION: Home win.

WASPS v CASTRES

(Sunday: Adams Park, 1pm — Pool 2)

Dai Young has made a couple of changes for the Wasps's last ever game in High Wycombe

Dai Young makes two changes for Wasps’ last ever game in High Wycombe as Charlie Davies and Ben Jacobs come in for Joe Simpson and Alapati Leiua. Max Evans, Cedric Garcia, Jannie Bornman and Marc-Antoine Rallier all start for French side.

PREDICTION: Home win.

CLERMONT v MUNSTER

(Sunday: Stade Marcel Michelin, 3.15pm — Pool 1)

French giants Clermont make four changes after their win at Thomond Park. Zac Guildford and Morgan Parra return to backline, Davit Zirakashvili and Alexandre Lapandry in the pack. Munster bring in John Ryan, JJ Hanrahan, Andrew Smith and Andrew Conway.

PREDICTION: Home win.

SCARLETS v ULSTER

(Sunday: Parc Y Scarlets, 5.15pm — Pool 3)

Luke Marshall (centre)  returns to the Ulster line-up after a spell out with injury

Scarlets bring in Kristian Phillips, Rhodri Williams and Rob McCusker as they try to move away from bottom of group. Luke Marshall returns for Ulster after injury, with Clive Ross and Declan Fitzpatrick also starting.

PREDICTION: Away win.