Atletico Madrid lost their Champions League opener 3-2 at Michel's Olympiacos last night.
Arthur Masuaku (13) and Ibrahim Afellay (31) looked to have put the Greeks in control.
Croatian striker Mario Mandzukic (38) got Atletico into the tie again before half-time with a goal on his Champions League debut, but Kostas Mitroglou - loaned back from Fulham - restored the two-goal cushion with 17 minutes left.
Antoine Griezmann (86) set up a nervy finish, but the home side saw out the closing stages for what could yet prove a valuable victory.
