Complex sentence: However, the jeer has recently experienced increased usage unrelated to its initial intent, as some fans will now chant "Yankees Suck" against a team other than the Yankees and during other sporting events besides baseball.
Split into simpler sentences: However, the jeer has recently experienced increased usage unrelated to its initial intent. Furthermore, some fans will now chant "Yankees Suck" against a team other than the Yankees and during other sporting events besides baseball.