Akasvayu Girona limited Panionios to just two points in the second quarter and then delivered a third-quarter knockout punch to reach the EuroCup Final Four.
Beaten for the first time in the EuroCup this season in Game Two at Panionios, Svetislav Pesic's team struck back with a vengeance and prevailed 83-49.
Panionios have promised to battle until the end against Akasvayu Girona in a bid to reach the EuroCup Final Four.
Panionios threw a major scare into Akasvayu in their first meeting, with the game tied at the end of three quarters before a mini-burst by the hosts saw the Spanish club get their noses in front for good at home.
Panionios rallied from a double-digit deficit to stun Akasvayu Girona and hand the Spaniards their first EuroCup loss of the season.
Two days after a hard-fought 76-68 loss in the opening game of this quarter-final match-up, Panionios looked to be heading for defeat again as Akasvayu took control in the second period.
Akasvayu Girona survived one of their biggest tests on Tuesday with an excellent fourth quarter to beat Panionios 76-68.
Panionios only just did edge Lokomotiv Rostov in the Round II group standings to advance to the last eight, but they looked determined to make the most of the opportunity.
Panionios BC Athens
|Hellenicon Olympic Complex|
Poseidon Avenue, 167 77 Athens, GRE
Tel: + 30 (210) 988 27 36
Fax: + 30 (210) 985 30 69