Complex sentence: Dan Hicks filled in for Al Michaels on the Colts-Steelers preseason matchup because Michaels needed a break after anchoring the 2012 Summer Olympics.
Split into simpler sentences: Dan Hicks filled in for Al Michaels on the preseason matchup between the Indianapolis Colts and the Pittsburgh Steelers. Michaels took some time off during that game after anchoring the 2012 Summer Olympics.