Complex sentence: In preparation for the 2002--2003 athletic season, the griffin mascot was completely re-designed and given a new costume and a new name, "Petey," chosen as a reference to St. Peter Canisius, who Canisius College is named for.
Split into simpler sentences: In preparation for the 2002--2003 athletic season, the griffin mascot was completely re-designed and given a new costume and name. The name "Petey" was chosen as a reference to St. Peter Canisius, who Canisius College is named for.