Matthews was selected in the first round of the June 1968 draft by the San Francisco Giants. He began his professional career in 1969 playing for the Giants' Decatur Commodores affiliate in Decatur, Illinois. In 1973, his first complete season, he won the National League Rookie of the Year award. Matthews batted.281 during his 16-season major league career with San Francisco, Atlanta, Philadelphia, the Chicago Cubs and Seattle. He appeared in 2,033 games and recorded 2,011 hits, 234 homers and 978 RBI while scoring 1,083 runs. Matthews was the National League Rookie of the Year in 1973 after batting.300 with 12 homers and 58 RBI for the Giants. He had his best overall season with the Braves in 1979, going to the All-Star Game during a season in which he batted.304 with 27 homers and 90 RBI. Matthews saw postseason action with the Phillies in 1981 and 1983. He homered 7 times in 19 playoff games and was voted the MVP of the 1983 NLCS after leading the Phillies past Los Angeles into the World Series. In the 5-game series, he went 6-for-14 with three homers and eight RBIs. He was also a key contributor to the Cubs' NL Eastern Division title in 1984, batting.291 with 101 runs scored. He had been acquired with outfielder Bob Dernier and pitcher Porfi Altamirano in a spring training deal with Philadelphia for pitcher Bill Campbell and catcher Mike Diaz. In the first game of the 1984 NL Championship Series against San Diego, he homered twice. He spent three seasons as a starter in left field for the Cubs. Matthews was limited by injuries in 1987 before being traded in mid-season to Seattle for minor league pitcher Dave Hartnett. In his 16-season career, Matthews batted.281 with 234 home runs and 978 RBIs in 2033 games. He finished with 183 career stolen bases, 1083 runs scored and 319 doubles. He had 2011 hits in 7147 at bats. He also showed decent plate discipline, with a lifetime.364 OBP, and a career high of.410. In 19 postseason games, he batted.323 with 7 home runs and 15 RBI. He posted a.968 fielding percentage as an outfielder. In his last MLB plate appearance, Matthews faced Texas Rangers pitcher Mitch Williams and singled, but was picked off in the next at-bat ending the ballgame.
Coaching career
After retiring as a player following the 1987 season, Matthews worked in private industry and broadcasting before joining the Cubs' organization in 1995 as minor league hitting coordinator, a position he held for three years. He left the Cubs in 1998 to become Toronto's hitting coach; he was a member of the Blue Jays' coaching staff for two years, then joined their broadcast team for two seasons. Matthews returned to the field in 2002 as Milwaukee's hitting coach and served as a coach for the Cubs in 2003–06.
Broadcast career
Matthews began his broadcast career as a radio commentator for the Toronto Blue Jays and as a studio analyst on Headline Sports Television, a Canadian cable network based in Toronto. After concluding his coaching career following the 2006 season, Matthews served as a color analyst for the Philadelphia Phillies from 2007 to 2013. During his first year in Philadelphia's booth, Matthews provided analysis for the entire game alongside Harry Kalas and Chris Wheeler. For the remainder of his Phillies broadcast tenure, Matthews provided analysis for only the middle three innings. Following Phillies victories from 2008 to 2011, Matthews would also conduct a brief on-field interview with a player who made a key contribution in that day's game. On January 8, 2014, Matthews and Wheeler were relieved of their commentary duties with the Philadelphia Phillies. Both were assigned other jobs within the organization. Jamie Moyer and Matt Stairs were hired to replace them.