The NBA champion Golden State Warriors are losing one of their top executives. Chief Marketing Officer Chip Bowers is joining baseball’s Miami Marlins as president of business operations, reporting to part-owner and Chief Executive Officer Derek Jeter, according to people familiar with the personnel move. The people requested anonymity because the move hasn’t been announced. It is Jeter’s second executive hire since taking the reins in September. Earlier this year he also added David Oxfeld from Jeter’s longtime agency, Excel Sports Management, where he worked on client sales and business development.