Toulon struggled to a 24-17 win over Bayonne at Stade Félix Mayol to move temporarily to the summit of the Top 14 standings on Friday.
Toulon's mixed form continued in a curious contest with Racing Métro, letting a major lead slip before winning 32-23.
Toulon full-back Delon Armitage has had his ban for swearing at a Leicester supporter cut from twelve to eight weeks on appeal.
Two of the big guns of the Top 14 face off on Saturday with Juan Martín Hernández set to take centre stage on debut for Toulon.
Toulon playmaker Matt Giteau has made a timely return to training having spent more than two months on the sidelines.
James O'Connor is eager to prove he has changed as a player after his return to Australian rugby following a spell in Europe.
Jake White's first Top 14 game in charge of Montpellier saw his team claim a hard-fought 16-12 win over defending champions Toulon.
Toulon's Delon Armitage will be appealing against the 12-week ban imposed on him for abusive language towards Leicester fans.
Toulon back-row Steffon Armitage still has a chance of playing for England and he could be in action at next year's World Cup.
Danny Cipriani is a shock target for European champions Toulon if he can't get back into England contention, according to reports.
EPCR's Disciplinary Officer has lodged misconduct complaints against Toulon players Martin Castrogiovanni and Delon Armitage.
Richard Cockerill has called Martin Castrogiovanni's expletive-laden rant at Welford Road on Sunday 'disgusting'.
Toulon pair Martin Castrogiovanni and Delon Armitage are under investigation by the ECPR following a fiery game at Welford Road.
Italy prop Martin Castrogiovanni launched an astonishing tirade at Richard Cockerill after Toulon's defeat to former club Leicester.
Defending champions Toulon face a tricky away game at Leicester in the European Rugby Champions Cup this weekend.
South African lock Bakkies Botha may push back his playing retirement until November next year because of the Rugby World Cup.
David Smith' second try settled a competitive contest between Toulon and Clermont at the Allianz Riviera in the Top 14 on Saturday.