Complex sentence: However, Keetley's biggest accomplishment occurred during the 2006-07 playoffs, when he won the airBC Trophy as Playoff MVP, and led the Tigers to their second league championship in four years.
Split into simpler sentences: However, Keetley's biggest accomplishment occurred during the 2006-07 playoffs. In the playoffs, Keetley won the airBC Trophy as Playoff MVP, and led the Tigers to their second league championship in four years.