Let's Play Ball! Know who won the World Series in 1929? If you're a Mutual of Omaha agent, you probably do. Every year, the company runs a three-month Baseball Contest to boost summer sales. The prize? A trip to two World Series games. So what does that have to do with the 1929 World Series? That's the year Mutual of Omaha held its first Baseball Contest. This is a tradition wrapped in a tradition.