Complex sentence: The DSK Shivajians U18 plays in the I-League U18, and the 2014-15 U19 I-League was the first time they are involved in national-level youth team football, partnering Liverpool, and played in the Maharashtra Zone of the league.
Split into simpler sentences: The DSK Shivajians U18 plays in the I-League U18. The 2014-15 U19 I-League was the first time they are involved in national-level youth team football, partnering Liverpool, and played in the Maharashtra Zone of the league.