Driessen was signed by the Reds as an amateur free agent in 1969. He made his major-league debut at age 21 on June 9, 1973, in an 8-4 Reds win over the
Chicago Cubs at
Wrigley Field. Starting at third base and batting sixth, he had one hit and one walk in five at-bats. His first career hit was a ninth-inning double off
Jack Aker. He had a productive rookie season, hitting .301 with four home runs and 47 runs batted in. Driessen received the
nickname "The
Cobra" during his rookie season because of the quick, lethal way his bat struck. He became Cincinnati's starting
third baseman in 1974, but was soon replaced at that position by
Pete Rose. Driessen was part of the Reds'
1975 World Series-winning team, going hitless in two at-bats in the Reds' seven-game win over the
Boston Red Sox. In 1976, Driessen became the National League's first-ever
designated hitter in a
World Series. Although he went 0–4 in the series opener against the
New York Yankees, overall he made the most of his opportunity by hitting .357 with five hits (including two doubles and a home run) and two walks in 16 plate appearances as the Reds swept the series for their second consecutive World Series crown. He was the Reds' starting first baseman from 1977 to 1984 after the trade of
Tony Pérez. His most productive year was in 1977 as he hit .300 with 17 home runs and a career-high 91 runs batted in along with a career-high 31 stolen bases. Driessen led all
National League first basemen in fielding three times. He also led the NL in walks with 93 in 1980. He was traded in the middle of the 1984 season to the
Montreal Expos. He saw significant playing time that season as well as in 1985 for the Expos and then, following another mid-season trade, to the
San Francisco Giants. In 1986, his playing time fell significantly as, for the third consecutive season, he played for two teams, the Giants, who released him on May 1, and the
Houston Astros, who signed him on June 2. He was released after the season and signed with the
St. Louis Cardinals on June 9, 1987. Filling in at first base for the 1987 National League champion Cardinals, in his third
World Series he hit .231 in 14 plate appearances as the Cardinals fell in seven games to the
Minnesota Twins. It was Driessen's final major-league season. ==Career statistics==