Lautoka takes on Ba in the first semi-final of the Vodafone Fiji FACT at Govind Park on Sunday morning.
The second semi-final is between Suva and Labasa at 10.30am.
The Northerners who finished off as runners-up to Rewa last year was the final team to book a spot in the semis after beating Navua 1-0 on Saturday night.
Young Apisai Sesewa scored the crucial goal in the 21st minute.
Ba last won the Fiji FACT in 2007 on home soil and will be motivated even further to repeat that feat five years later.
Suva topped Pool Two with 10 points while Lautoka came in second with 9 points.
Nadi lost out and finished off in third place with 5 points as defending champions Rewa and Savusavu came in the bottom five.
Ba finished ahead of Labasa in Pool One followed by Nadroga, Tavua and Navua.
