MACIU Dunadamu scored a hat-trick against his former side Labasa to put Ba in the Vodafone Fiji FACT semi-finals.
The lethal striker struck in the 30th, 61st and 75th minutes to bring the Men in Black back from the dead to contest for the FACT title.
Ba lost to Nadroga 0-1 on the opening day but came back strongly against Rewa 2-0 and Labasa to remain in the title chase.
Labasa, which had qualified for the semi-finals after two early wins, rested some senior players who copped yellow cards against Rewa and Nadroga.
The Babasiga Lions played poorly and coach Bal Sanju Reddy admitted his players did not commit in the match.
"Actually we had qualified for the semi-final prior to this game so we didn't want to commit," Reddy said.
"The semi-final is a very important game and seven of my boys have already got a yellow card each.
"With the new rule that those players with two yellow cards cannot proceed to the next game so I had to take the precautionary measures."
Reddy asked the fans not to "panic" and continue supporting them.
"This result doesn't matter to me. We play Nadi or Suva is not a problem for us. This is the approach we took so we can come back in full force. I ask the fans to continue supporting the team and we will come back stronger and should win over Suva."
Ba coach Yogendra Dutt hailed his players for staging a grand come back.
"The confidence was there until today that we would be coming back next week so big congratulations to the boys for the big effort. We are proud of our performance."
Ba finished on top of Group A with six points followed by Labasa also on six while Suva remained the only unbeaten team in the tournament on nine points followed by Nadi on six.
Ba will play Nadi in the first semi-final at 3pm followed by Suva and Labasa semis at 5pm this Saturday.