Complex sentence: After a disappointing conclusion to the 1975 season (winless in conference), Sweeney resigned at WSU a week after the season ended and was promptly hired at Fresno State, where he coached for two seasons before becoming an NFL assistant for two years.
Split into simpler sentences: After a disappointing conclusion to the 1975 season (winless in conference), Sweeney resigned at WSU a week after the season ended. He was promptly hired at Fresno State, where he coached for two seasons before becoming an NFL assistant for two years.