Mathare United began the new season in style after they beat Chemilil Sugar 2 - 0 in the Kenya Premier League match played on Saturday, at MISC, Kasarani.
Cliff Nyakeya scored from a rebound after his penalty was saved by Job Ochieng on the 6th minute after he was brought down in the penalty area by the surging Chemilil goalie Bernard Onunga.
10 minutes later, Clifford Alwanga headed home from Kevin Kimani's corner to add a second for the Slum Boys, and could have been worse had Nyakeya not squandered his opportunity when through on goal with only the keeper to beat.
Chemilil's lone attempt in the first half went over the bar thanks to Nicholas Akoko's effort.
On resumption of the second half, Chrispin Oduor came close to scoring the third goal for Mathare only to be denied by the goal post.
Chemilil failed to capitalize on Mathare United 's 10 men reduction on the 80th minute, after custodian Job Ochieng received the marching orders for fouling Lucas Waitere on the edge of the box.
Meanwhile, KPL defending champions Gor Mahia were shocked by Bandari FC as they succumbed to a 2 - 1 loss, at Mbaraki Sports Club.
William Wadri headed home from a cross on the stroke of halftime to put Bandari ahead, and David Kingatua cemented the hosts' lead with a second goal on the 52nd minute.
Debutant Nicholas Kipkurui pulled back a consolation for Gor with ten minutes to play.
Elsewhere in Bukhungu stadium, Ravel Maxwell lone goal was enough for Kakamega Homeboyz to see off KCB in another KPL match.
At Afraha Stadium, Western Stima beat Posta Rangers with the same margin. Wesley Kemboi scored for Stima on the 64th minute.