The rivalry is an important factor in each station's success. The challenge will be for Entercom to maintain that competitive spirit even as the sales team works to build on the combined stations' existing revenues. Not an easy task. If DOJ mandates that one of the sports stations has to go, Cox might be an interesting choice for WEEI, as WFXT already has a joint venture with NESN for Patriots coverage and Butch Stearns already has a weekend talk show on WEEI.