Simplify the following text for a Grade 6 native English-speaking person.
Original: Browns owner Art Modell fired Carson halfway through the 1990 season , following a 42-0 home loss to the eventual 1990 AFC Champion Buffalo Bills . Browns ' offensive coordinator Jim Shofner became head coach and the demoralized Browns finished the season with a franchise worst 3-13 record .
Simplified: Browns owner Art Modell fired Carson halfway through the 1990 season , which ended with a 3-13 record .