He appeared briefly with the Reds in 1964, making his major league debut on September 23, 1964, against the Philadelphia Phillies with one plate appearance that year. He also had a short stint with the Reds in 1965, with 46 plate appearances. On September 1, 1965, during a doubleheader, Helms batted 4-for-4 with two triples. Helms' first full season in the majors was 1966. A natural shortstop, Helms was moved to third base by the Reds his rookie season with Leo Cárdenas firmly entrenched at short. Helms clubbed nine home runs, batted .284, and provided sparkling defense at his new position to earn the 1966 National LeagueRookie of the Year.
In 1967, the Reds shuffled their line-up, moving budding superstar Tony Pérez to third, Helms to second, and Pete Rose from second base to left field. As a second baseman, Helms was a member of the National League All Star Team in 1967 and 1968, and won the National League Gold Glove award in 1970 and 1971. The Reds moved to Riverfront Stadium on June 30, 1970, where Helms hit the first Reds home run on July 1. Helms started all five games of the 1970 World Series, with four hits and one walk in 19 plate appearances as the Reds fell to the Baltimore Orioles.[1]
During his Gold Glove season of 1971, Helms set a Reds record turning 130 double plays. He led National League second basemen in double plays in 1969 and 1971, fielding percentage in 1970, 1971 and 1974 and assists in 1972.[1]
In his autobiography, Charlie Metro shares this anecdote about Morganna "The Kissing Bandit" and Helms: "At first the players were shy and would kind of run. But after a while, heck, the guys all loved it. One time in Cincinnati, she ran out there toward Tommy Helms. She ran right out beyond the infield, and Tommy was the type of guy who wouldn't run from her. He just opened up his arms and said, 'Come here, baby.'"[2]
Shortly after reacquiring him, the Pirates released Helms. He signed with the Boston Red Sox for the remainder of the 1977 season, serving primarily as a designated hitter before calling it a career. During his 14 years in a major league uniform, Helms struck out only 301 times in almost 5,000 at bats. Former Reds closer Clay Carroll was once asked, "Who would you want at second base when the game was on line?" He promptly responded, "Two words, Tommy Helms."
Helms served on Pete Rose's coaching staff when Rose was named manager of the Reds in 1984. On April 30, 1988, during a home game against the New York Mets, and following a call by umpireDave Pallone which allowed the Mets' eventual winning run to score in the 6–5 game, Rose argued vehemently and made physical contact with the umpire, noticeably pushing him. National League president A. Bartlett Giamatti suspended Rose for 30 days. Helms served as manager of the Reds during Rose's suspension and led the team to a 12–15 record.
After retirement he lived in North Carolina and later in Cincinnati.[citation needed] From 1990 to 1992, his son Tommy Helms Jr. played in the Chicago Cubs organization, and his son Ryan Helms played in 1994 and 1995 in the Chicago White Sox organization.[6]
In 2013, Tommy Helms was inducted into the North Carolina Sports Hall of Fame.[7]