Georgia withstood a furious Bosnia and Herzegovina rally to escape Sarajevo with a 96-95 upset of the hosts.
Georgia had led 28-9 at the end of a stunning first quarter but the home team came charging back and it came down to a furious final few seconds.
Mirza Teletovic nailed a three-pointer for the Bosnians to make it a one-point game with 26 seconds left, and the hosts got their chance when Viktor Sanikidze turned it over for Georgia with just six seconds left.
But after they called a time-out to draw up their play, Nihad Dedovic turned it straight back over and time ran out on the rally.
Georgia shocked the hosts in the first quarter with some lights-out shooting, and back-to-back threes from Jacob Pullen and George Tsintsadze gave them a 19-point lead going into the second quarter.
Sanikidze added two more before Bosnia finally responded, with a 10-0 run making it 32-23 on Teletovic's lay-up.
Pullen's three sparked another Georgian charge that got it to 46-28 and they were still comfortably out in front when Sanikidze's lay-up made it 71-54 midway through the third.
A series of threes from Bosnia began to slice that lead and Nedzad Sinanovic made it 75-72 just before the end of the third quarter and the teams then fought it out to the frantic finale.
Pullen scored 20 points to lead Georgia while Sanikidze added 19 and 11 rebounds.
Manuchar Markoishvili added 17, Zaza Pachulia 16, and Tsintsadze and Tornike Shengalia 12 apiece.
Teletovic had 27 for Bosnia with Dedovic adding 20, Ante Masic 17 and Sinanovic 13.