Francois Trinh-Duc struck a late penalty as Toulon won 30-29 at Treviso.
The sides scored two tries each, Juan Ignacio Brex and Edoardo Gori going in for Treviso, while Semi Radrada and Josua Tuiosva scored for the visitors.
Trinh-Duc's failure to convert both, as Ian McKinley successfully did for Treviso, looked to be costly.
The two men traded five penalties apiece until Trinh-Duc won it with his sixth attempt.
Treviso sit bottom of Pool Five as a result, with Toulon level top with Bath.
Toulouse won a record-extending sixth European Champions Cup when a Matthis Lebel try helped them beat Leinster 31-22 after extra-time on Saturday.
Plans for a rugby Club World Cup where the best northern and southern hemisphere club sides will compete against each other are in the offing, sources have told ESPN, with the tournament set to launch in 2028.
La Rochelle became the fifth team to win back-to-back European Champions Cups on Saturday when they clawed back a 17-point deficit to beat Leinster 27-26 at the Aviva Stadium in another breathless final between the sides.
Wallabies great David Campese says Marika Koroibete is yet to hit the ceiling of his rugby talents, but the man who made the gold No. 11 jersey famous is displeased by talk Rugby Australia is lining up a mega-rich offer to teen sensation Joseph Suaali'i.
The 2023 Champions Cup and Challenge Cup finals will be played at Dublin's Aviva Stadium instead of Premier League football club Tottenham Hotspur's stadium in London, European Professional Club Rugby (EPCR) said on Thursday.
All Round 2 matches between U.K. and French sides have been postponed hours after Ospreys vs. Racing 92 was called off due to a number of positive COVID-19 cases in the Welsh squad.
