The only goal for the winners was scored in the 7th minute by Moses Odhiambo after he capitalized on a goal mouth melee to slot the ball home.
Gor's arch-rivals AFC Leopards hit Division One side Kariobangi Sharks 2-0 at Nyayo Stadium in another match also played on Saturday.
Leopards who won 2-1 against Azam last weekend, showed early intent to win this fixture but had to wait till the second half to score.
Mike Basara opened the scores after just 50 minutes before paving the way for Oscar Kadenge to net the second one in the 75th minute. Champions Tusker stopped Division One side Nzoia 2-1 in Bungoma.
In Mombasa, promoted side Bandari hit Malindi's Maweni 3-0 in a match played at Mbaraki Sports Club. Abdulatiff Omar, Hamisi Mwinyi and Thomas Morris scored a goal each for the winners in the 12th, 45th and 75th minutes respectively.
Earlier on Friday, Western Stima stopped Malaba Border FC 2-0 at Bukhungu Stadium. Former Chemelil Sugar striker Hedmond Ochieng playing his first match for Stima scored both goals in the first half.
Former Kenyan Premier League (KPL) champions Sofapaka were also 2-0 winners over Division One side Ligi Ndogo in a match played at Eastleigh Secondary School.
John Baraza, last season’s KPL top scorer, netted the first goal in the 10th minute before paving way for Elly Asieche to score the second in the 50th minute.