Complex sentence: He missed the end of the 2003 season with a collapsed lung, and the broken hand he suffered in May 2004, hurt his chances of taking over as the Blue Jays' starting catcher in.
Split into simpler sentences: He missed the end of the 2003 season with a collapsed lung. The broken hand he suffered in May 2004 hurt his chances of taking over as the Blue Jays' starting catcher in.