Complex sentence: The 2015 CFL draft class was believed to be the deepest in many years--a result of both CFL eligibility rules and increasing quality of coaching and systems in the high school and university level across Canada.
Split into simpler sentences: The 2015 CFL draft class is believed to be the deepest in many years. A result of both CFL eligibility rules and increasing quality of coaching and systems in the high school and university level across Canada.