Freiburg reached the last 16 of the Europa League after coming back from a 2-0 deficit to claim a 3-2 win against Lens in extra-time in the second leg of the Europa League knock-out round play-off on Wednesday. Michael Gregoritsch scored the winner in the 99th minute, but only after Roland Sallai completed a dramatic brace to settle the 2-2 draw in the final minutes of regular time. “Unbelievable, how often do you get to experience something like this? This is a one for the ages,” Gregoritsch told broadcasters RTL. David Pereira da Costa put Lens ahead in the 28th before Elye Wahi increased th…