Both sides made a cautious start at Skonto Stadions and it took until almost the 30-minute mark for either team to have a clear-cut goalscoring chance. Artjoms Rudnevs unexpectedly found himself one on one with Georgia goalkeeper Nukri Revishvili after captain Kakha Kaladze had failed to deal with Cauna's cross, only to completely mis-hit his shot.
Georgia replied with a surging run from the lively Jano Ananidze, forcing Latvia goalkeeper Andris Vanins to dive to his left and make an agile save. Rudnevs missed another opportunity to grab the opening goal in the 37th minute as Latvia enjoyed a period of domination. The Lech Poznan striker was first to the rebound after Juris Laizans' powerful shot from distance, only to see his effort from close range fly high and wide.
Rudnevs then headed inches wide from a Laizans' corner while, at the other end, Vanins could only parry the ball after David Kvirkvelia's powerful effort from distance, Murtaz Daushvili tapped in the rebound but the effort was disallowed for offside.
Siradze then put visitors ahead in 74th minute. Ucha Lobzhanidze flicked the ball on from a Jano Ananidze free-kick and the Spartak Nalchik striker slotted home from close range.
Latvia picked up the tempo as they desperately sought an equaliser and their efforts were rewarded one minute into stoppage time as Cauna levelled with a magnificent scissors kick from near the penalty spot after substitute Kristaps Grebis had done well to win the ball in the air on the edge of the box.