FC Porto beat Marseille 3-0 in Group C on Tuesday, inflicting a record 12th consecutive defeat in the Champions League on the French club and leaving Andre Villas-Boas's team on the brink of elimination.
Moussa Marega, Sergio Oliveira with a penalty and Luis Diaz found the back of the net, while Dimitri Payet missed an early penalty for Marseille. The result meant Porto stay second on six points, three behind Manchester City who maintained their perfect record with a 3-0 win over Olympiakos.
OM, the 1993 champions, have now matched Belgian side Anderlecht's infamous record in the Champions League from 2003-2005, and have not scored a goal since Souleymane Diawara did in 2013 in a 2-1 defeat against Borussia Dortmund.
Marseille's last win in Europe's premium club competition came in 2012, when they beat Inter Milan 1-0 in the first leg of their round-of-16 tie.
Villas-Boas, who coached Porto to a Europa League title and a domestic double in 2010-11, was frank about his side's performance.
"In order to be s--- in the Champions League, you have to at least qualify for the Champions League. We did it and we are being s---," the Portuguese boss said.
He added: "Qualification for the Europa League is no reward for anyone. We are not going to aim at this as a big goal because it is not. It is possible, because there are still games with Olympiakos and the next with FC Porto ... but that is not the goal. I just want to clean up this image that has been terrifying."