Complex sentence: The team won the International League pennant in 1913, but the following year they slipped to fifth, then in 1915 suddenly had competition: the Indianapolis Hoosiers of the Federal League moved to town, re-named the Newark Peppers.
Split into simpler sentences: The team won the International League pennant in 1913, but the following year they slipped to fifth. In 1915, the Indians suddenly had competition: the Indianapolis Hoosiers of the Federal League moved to town, re-named the Newark Peppers.