|Zsófia Fegyverneky was the last gasp hero for Sopron|
The home fans were left in raptures when the net swished for their team, although there was a very different sensation for Rivas, who by a strange quirk of fate had started the regular season by benefitting from a buzzer beating shot.
For much of the middle part of the game, Sopron looked assured and like they might get the job done during regulation - not least when a pair of free-throws from Sara Krnjic put the hosts 53-42 ahead.
However in the end, they were glad to be able to squeeze out the extra period after Rivas posted a 24-10 burst of scoring to regain the initiative.
It took an Iva Ciglar lay-up for the home club with two seconds left, as well as a missed Laura Nicholls shot to book overtime and when Rachel Allison then converted to make it 79-78 for Rivas late in the extra period, it looked like it just wasn't to be for Sopron.
But, Fegyverneky had the last word and snatched a memorable win en-route to 17 points, a tally matched by backcourt partner Ciglar.
Frida Eldebrink had 19 points for Rivas, whilst Nicholls landed a double-double of 18 points and 10 rebounds as the Spaniards concluded a miserable few days in the wake of last Sunday's Copa de la Reina loss.