Toulon earn astonishing nine-try victory
Jonny Wilkinson's Toulon caught fire against Oyonnax as they racked up an astonishing 64-10 victory in their Top 14 clash.
As well as his try, Wilkinson also landed a drop goal and eight conversions in the most one-sided match of the season so far.
Lucas Amorosino scored a consolation try in the second half for the unfortunate visitors, who remained second from bottom in the table.
Toulon's huge win lifts them top ahead of Clermont, who fell to a surprising defeat away at mid-table Bordeaux-Begles.
Clermont looked in control as they led 13-6 following Elvis Vermeulen's try shortly before half-time.
But Bordeaux trimmed the deficit via a penalty just before the break, and then Metuisela Talebula scored two second-half tries as the hosts dominated the second period - the second of those two scores coming in the penultimate minute to deny Clermont even the dignity of a losing bonus point.
Montpellier had beaten Stade Francais 19-10 on Friday night, and Castres missed a chance to leapfrog both as they lost 25-15 at Racing Metro.
That result puts Racing Metro sixth, three points behind fifth-placed Castres.
Brive cruised to a 31-6 win over Grenoble, while in the day's other mid-table clash Toulouse face Perpignan later on Saturday night.
Bottom club Biarritz play Bayonne on Sunday.