Both teams were initially subdued given the circumstances, though the game tilted in Wolves’ favour after 29 minutes when Ruben Semedo brought down the breaking Diogo Jota just outside the Olympiacos area and received a straight red card.
Despite that setback Olympiacos took the lead when a break down the right led to a tap-in for Youseff El Arabi just before the hour. Wolves drew level eight minutes later when a deflected Pedro Neto free kick trickled into the Olympiacos net.
As things stand Wolves return to Molineux next week with a slight advantage due to their away goal, but there is understandable doubt about whether that fixture will be able to go ahead.