To understand Marseille’s season, you need not watch all of their games; those played against PSG will suffice. After Marseille’s 1-0 win over the European champions in September – their first at the Vélodrome in the league in 14 years – the word “finally” was the word scrawled across the front page of local paper La Provence. That victory brought relief, but also hope and optimism: the Empire could be toppled. But it struck back on Sunday night.