sentences:  The team decided that Highsmith wasn't a good fit for new system.On September 3, he was traded to the Dallas Cowboys in exchange for a second round (#38-Darryll Lewis) and a fifth round (#136-Tim Roberts) draft choice.Although he had started 40 straight games with the Houston Oilers, he had a series of offseason knee surgeries, that had doctors recommending against the Dallas Cowboys acquiring him in 1990, based on a knee condition that could potentially end his career.