Complex sentence: There was one segment that recurred each week on the show: "My SportsCenter", in which each contestant read a highlight, or, as they did in week 4, introduce packages done by the person they were "co-anchoring" their segment with.
Split into simpler sentences: There was one segment that recurred each week on the show called "My SportsCenter". Each contestant was to read a highlight, or, as they did in week 4, introduce packages done by the person they were co-anchoring their segment with.