Golden, let your kid do as many sports as he chooses at this age. As a coach, it would be hard for me to tell the kid he couldn't do both. Workouts for individual track events can be done before school or after baseball practice. We have kids here at our school that do both. Both coaches should realize the importance of running in both sports and the kids determination to work at both. My college baseball son ran the hurdles through jr high and through his junior year in high school. His speed increased tremendously and track is the reason. The flexibility gained from track workouts and the stretching involved were the reasons. In our state, most track meets are now on thursday evenings after school. The only schedule problems were early in the season with baseball tournaments that start on thursdays. Lots of mom time hauling kids back and forth from meets to tournaments, The biggest factor will be the ego of both coaches to allow the kid to do both. Good luck.