Complex sentence: Unitas's first start was in the fifth game of the 1951 season against St. Bonaventure, where he threw 11 consecutive passes and three touchdowns to give the Cardinals a 21--19 lead.
Split into simpler sentences: Unitas's first start was in the fifth game of the 1951 season against St. Bonaventure. That game, the freshman threw 11 consecutive passes and three touchdowns to give the Cardinals a 21--19 lead.