He remained with the Lions for four additional years .
He continued to be impaired by a bad knee , and never achieved the same level of performance , totaling 247 receiving yards in 1965 , 411 in 1966 , 322 in 1967 , and 42 in 1968 .
He remained with the Lions for four additional years , but he continued to be impaired by a bad knee , and never achieved the same level of performance , totaling 247 receiving yards in 1965 , 411 in 1966 , 322 in 1967 , and 42 in 1968 .