Nairobi, Sept. 13 -- For Yusuf Omari, the journey to the CEO's office never started with a grand career plan. He was simply a boy from Umoja spending his afternoons on Eastlands' tarmac football pitches with an open mind.

But it was those pitches of Umoja that offered Omari his first lessons in competition, humility, friendship and persistence. Years later, those lessons would follow him into a very different arena -the boardroom of one of Kenya's largest banks.

Last week, Omari became the CEO of Absa Bank Kenya after more than two decades at the lender, capping a career that has taken him from internal audit to finance and, for 17 years, the chief financial officer.

His rise has been less about chasing titles than embracing opportunit...