Sealey's ouster from Coke marks change in CAA role.

Reports on the effect of Coca-Cola chief marketing officer Peter Sealey's ouster on Creative Artists Agency's (CAA) role in the marketing of Coca-Cola. Sergio Zyman as Sealey's replacement; Imminent reduction of CAA's role in Coke advertising; Zyman's reputation as a brilliant but difficult client who can be rough on advertising agencies; Likelihood of strengthed positions for IPG and Lintas Worldwide.