But later, his passion for cricket fazed off when he joined Githumu high school in Murang’a County and found out other friends who were good in football like Douglas Karanja who later played with him at Kenya Breweries and Charles Machiwa.
At this level, Austrian born tactician Gerry Saurer was in the country and worked with the Kenyan national team.
Here Omollo was recruited among other Kenyan greats like Francis 'killer' Oduor, Peter Mwololo, Vincent Kwarula, Allan Odhiambo, Tony Lwanga and many others.
Omollo began his senior professional career there and making his Kenyan Premier League debut for Kenya Breweries F.C.
He played for Kenya Breweries up to 1996 and won the Kenyan Premier League in his final year with the Brewers.
Omollo later moved to India and signed a professional contract with National Football League side East Bengal FC from Kolkata[8] in 1996.
Omollo made all total 20 FIFA international appearances (excluding 3 non-FIFA matches) for the Kenya national football team.
He silently jetted back to Kenya after falling out with the Indian club's hierarchy and eventually settled at Kenyan Premier League outfit Posta Rangers in 2016.