City Stars' Japanese forward Yuto Kusaba who was making his first league start since joining the team claimed the assist as Stars' upset bandari at home in Mombasa.
For the second weekend running, Gor Mahia have failed to gather maximum points after playing Ulinzi Stars to a barren draw at Kenyatta Stadium in Machakos.
Last weekend, Gor tasted defeat for the first time after falling to Kenya Police and were looking to bounce back as well as regain their massive cushion at the top.
However, they were held by the soldiers who are still waiting for their first win over Gor since July 2021.
Following the result, Gor's lead at the top had been cut to seven points, opening wide the league race as there are more than ten matches to be played.
Earlier on at the same venue, ten-man Posta Rangers held Kenya Police to a barren draw despite playing the better part of the game with a man less.
This was the first time Police have dropped points under coach Salim Babu who took over the reigns in December last year, succeeding his sacked boss Zdravko Logarusic.
Posta were reduced to ten men in the seventh minute after Ivan Ochieng was sent off for a reckless challenge on a day he was making his home debut.
The 19-year-old left back joined the mailmen in the mid-season transfer window as a free agent and will miss the next two matches as a result of the red card.
In Mombasa, Nairobi City Stars caused an upset after edging Bandari 1-0 at the Mbaraki Grounds.
City Stars who had not won in the preceding two matches secured maximum points courtesy of an early goal by Vincent Owino.
Japanese forward Yuto Kusaba who was making his first league start since joining the team claimed the assist.
City Stars have sealed a double over Bandari as they won the first leg staged at Ruaraka Grounds last year by a similar margin.
The result puts Bandari's titles chances hanging in the balance as the gap between them and the top three teams has widened.