Complex sentence: Elway attempted a middle screen pass to running back Steve Sewell (which had been Denver's most effective play), but it was tipped by Bills defensive lineman Jeff Wright into the arms of linebacker Carlton Bailey.
Split into simpler sentences: Elway attempted a middle screen pass to running back Steve Sewell (which had been Denver's most effective play). But it was tipped by Bills defensive lineman Jeff Wright into the arms of linebacker Carlton Bailey.