Dave Rosenfield Dave Rosenfield is a giant in the Minor League Baseball industry, both literally and figuratively. Having been a general manager in the bushes of professional baseball continuously since 1956, Dave has seen the game and the business change, and he has adapted alongside. A professional story-teller, Dave is known for holding court at a favorite watering hole or ballpark near you, sharing his vast experiences in Americas National Pastime. John Traub John has worked for 25 seasons in professional baseball, including more than two decades in the minor leagues. His stories cant hold a candle to Dave Rosenfields.