Spurs did not look at their best but took the lead when Harry Kane fired home from the penalty spot after he was tripped in the box.
And they looked to be on course for all three points when Lucas Moura smashed a long-range shot home a few minutes later.
But the home side equalised just minutes before half-time thanks to Daniel Podence, who exchanged neat passes with Mathieu Valbuena before curling a low shot around Hugo Lloris.
And Valbuena then levelled the score from the spot after Jan Vertonghen clumsily brought him down on the very edge of the penalty box. Here are our player ratings:
Player ratings: Olympiacos vs Spurs
Show all 23
Check the above gallery to see how we rated the two teams.
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