Complex sentence: The CIAA annual Basketball Tournament is the third most attended athletic event in collegiate sports after the Atlantic Coast Conference and Big East tournaments; and is the first NCAA Division II conference to have its tournament televised as part of Championship Week on ESPN.
Split into simpler sentences: The CIAA annual Basketball Tournament is the third most attended athletic event in collegiate sports after the Atlantic Coast Conference and Big East tournaments. It is the first NCAA Division II conference to have its tournament televised as part of Championship Week on ESPN.