Racing 92, Lyon and Castres got the play-off outcomes they were hoping for in Top 14, while Stade Francais stay up despite suffering defeat.
Toulon moved up to second in the Top 14 table with victory over Castres, but no one can now catch leaders Montpellier.
Former England wing Chris Ashton scored a record 22nd Top 14 try of an outstanding debut season as Toulon beat the leaders at Stade... Read more
Stade Francais' reign as European Challenge Cup holders is over after defeat to Pau, who joined Newcastle Falcons in the semi-finals.
Montpellier ran in five tries to claim a bonus-point victory over Castres, maintaining their position as Top 14 leaders.
Montpellier suffered their seventh Top 14 loss of the season, Toulouse getting the better of the leaders.
The leaders of the Top 14, Montpellier, thumped their nearest rivals on Saturday, while struggling Oyonnax also claimed an important win.
Montpellier's lead at the summit was cut to three points after they went down at Agen and Racing 92 defeated struggling Brive.
La Rochelle are a formidable force on home soil, but suffered a rare defeat at Stade Marcel-Deflandre as Toulon came from behind to win.