Complex sentence: For the Browns, this would mark the third straight regular season game that they played in: that would be decided by 3 or fewer points, and that would have a game winning field goal in the final ten seconds of the fourth quarter.
Split into simpler sentences: For the Browns, this would mark the third straight regular season game that they played in that would be decided by 3 or fewer points. It was also the third straight game that would have a game winning field goal in the final ten seconds of the fourth quarter.