Complex sentence: Unfortunately for Rivers, Brees went on to have a then-career year and was named to the NFL Pro Bowl while winning the NFL Comeback Player of the Year Award.
Split into simpler sentences: Unfortunately for Rivers, Brees went on to have by far the best season of his career up to that point. By the end of the season, Drew Brees was named to the NFL Pro Bowl and won the NFL Comeback Player of the Year Award.