Complex sentence: The former Calder Trophy winner had struggled in consecutive seasons and the Blue Jackets signed Mark Dekanich as the back-up who had only 50 minutes of NHL experience prior to the start of the season.
Split into simpler sentences: The former Calder Trophy winner had struggled in consecutive seasons. The Blue Jackets signed Mark Dekanich as the back-up who had only 50 minutes of NHL experience prior to the start of the season.