Unbeaten Ligue 1 leaders and holders Paris St-Germain suffered a shock French League Cup exit against the top-flight’s bottom side Guingamp.
Marcus Thuram, son of France legend Lilian, scored an injury-time penalty, adding to Yeni N’Gbakoto’s earlier spot-kick for a 2-1 triumph.
Neymar netted for PSG, who were aiming to win the competition for the sixth straight season and eighth overall.
Thierry Henry’s struggling Monaco side also progressed to the semi-finals.
Monaco, in 19th place in the table and five points off safety, went through courtesy of an 8-7 penalty shootout victory over Rennes after the game finished 1-1.