Complex sentence: After spring training ended, he began his professional career with the Modesto Colts of the California League and played in 78 games for the team with a.219 batting average and 15 doubles.
Split into simpler sentences: After spring training ended, he began his professional career with the Modesto Colts of the California League. He played in 78 games for the team, and had a.219 batting average and 15 doubles.