In April 1976, Blackwell's contract was purchased from the Red Sox by the Philadelphia Phillies.[8] He served as a reserve catcher behind Bob Boone before being traded to the Montreal Expos in 1977 for Barry Foote.[8] After hitting for a .091 average as Gary Carter's back up, Blackwell was released by the Expos in January 1978 and, signed a contract to play for the Chicago Cubs.[2] With the Cubs he played as a reserve catcher behind Dave Rader and Barry Foote, who had been traded by the Phillies. When Foote was injured in 1980, Blackwell became the Cubs starting catcher, posting career-highs with a .272 batting average along with 16 doubles, 5 home runs and 30 runs batted in.[1] He also led National League catchers in double plays, range factor and baserunners caught stealing, and finished second in assists behind Gary Carter.[9] In 1981, Jody Davis took over as the Cubs main catcher, although Blackwell still managed to finish second among the league's catchers with a .993 fielding percentage in 56 games.[10][11] Blackwell was granted free agency at the end of the season and, he signed with the Montreal Expos where he served as a reserve catcher behind Gary Carter for one season before retiring as a player in May 1983 at the age of 30.[8]
Career statistics
In a ten-year major league career, Blackwell played in 426 games, accumulating 238 hits in 1,044 at bats for a .228 career batting average along with 6 home runs, 80 runs batted in and a .328 on-base percentage.[1] He ended his career with a .981 fielding percentage.[1] While he was a light-hitting catcher, Blackwell had a strong throwing arm with a quick release and, was a good pitch caller.[12]