Complex sentence: Over the course of the season, Washington went 5--3 in home games at FedExField, and 4--4 on the road; they lost 6 of their 7 games by one touchdown or less.
Split into simpler sentences: Over the course of the season, Washington went 5--3 in home games at FedExField, and 4--4 on the road. Also, they lost 6 of their 7 games by one touchdown or less.