Atletico took a slight advantage into the match after recording a 1-0 win when the pair met in the Spanish capital last week.
However, that goal was cancelled out towards the end of the first period when Aritz Aduriz headed home from inside the box.
Read how it all unfolded in Sports Mole's minute-by-minute live commentary of the action below.
BILBAO: Iago; Iraola, San Jose, Laporte, Balenziaga; Iturraspe, Rico; Susaeta, Herrera, Muniain; Aduriz
ATLETICO: Courtois; Juanfran, Godin, Miranda, Luis; Koke, Garcia, Gabi; Adrian, Costa, Rodriguez