Western Bulls unblemished record in the KRU Championship came to an end in Nakuru after going down 8-26 to Menengai Oilers at the Nakuru Athletics Club.
Bulls had won their first three matches of the season. It was Oilers fourth win of the season and their 24th consecutive fifteens win.
Skipper Harold Anduvate dotted down twice, winger Derrick Mbaire once while fullback Dan Abuonji added three penalties and a conversion.
Nickson Nyandieka's try and a penalty by centre Bob Muhati accounted for the away side's points. Western Bulls drew first blood in the nascent stages of the contest, Nickson Nyandieka streaking down the left wing to dive in at the corner.
Fly-half Allan Kasiti missed the conversion.
From then it was a battle between kickers, with Oilers Dan Abounji edging Bulls' Bob Muhati in that contest two to one. 6-8 to Bulls. The Gibson Weru boys returned revitalised from the water break with Derrick Mbaire and a brilliant solo try by Harold Anduvate ensuring they lead 18-8 at halftime.
Western Bulls burly centre Bob Muhati had a chance to score the first points of the second half but his penalty went wayward. Abounji would split the posts for Oilers not long after ensuring the scoreboard read 21-8 with 15 minutes to spare.
At the stroke of fulltime Harold Anduvate unleashed a barnstorming run to crash over. Derrick Keyoga couldn't add the extras.
Mean Machine continued with their unbeaten run as they saw off JKUAT Cougars 12-6 in the fifth round. The former Kenya Cup side scored two tries with one going unconverted as JKUAT managed only two penalties.
Philip Makeo converted Shadrack Mwonoko’s try with Grievous Onyino also getting on the scoresheet.
The four points mean they stay second with 18 points as Oilers sits top with 19 points courtesy of their 28-8 win over Western Bulls who stay third.