It was raining goals at Lawaqa Park in Sigatoka as Labasa came from two goals down to beat Ba 4-3 in the first semi-final of the 2022 Digicel Fiji FACT.
Two early goals from Narend Rao Jnr and Saula Waqa saw Ba leading 2-nil in the first spell.
Lekima Gonerau pulled one back for Labasa as the Men in Black led 2-1 at halftime.
Christopher Wasasala grabbed a brace while Taniela Waqa added another as Labasa took a 4-2 lead in the second spell.
Ba got a consolation goal through Kini Madigi in added time.
Labasa will play the winner of the second semi-final between Suva at Lautoka at 5pm today.
The final is scheduled for 3pm tomorrow.