Rod Seiling went through three different phases as a hockey player. First, as a high scoring winger during his junior career; second, as a defenceman who was expected to become a high scorer in the NHL; and, finally, a defensive-minded back-checker for several teams.
Seiling began his junior career with the St. Michael's Majors of the OHA in 1960. He played there for two seasons, his last being his most productive as he collected 50 points in 31 games. The 1962-63 season was one of change. He played for the Neil McNeil Maroons in Toronto Junior and amassed 77 points in only 38 games. From there, Seiling signed with the Toronto Maple Leafs but played only one game for them before being sent down to the minors for two different teams. He began the 1963-64 season with the Marlies and collected 67 points in 41 games before representing Canada at the 1964 Olympic Winter Games in Austria where the team finished out of the medals. The Leafs then traded Seiling to the New York Rangers where he spent the next ten seasons.
As a Rangers defenceman, Seiling was known as a stay-at-home blueliner who made few mistakes. After being claimed by the St. Louis Blues in the Expansion Draft of 1967, the Rangers were quick to trade for him the same day to keep him in New York. He enjoyed a great 1971-72 season collecting 41 points in 78 games and was named to the NHL All-Star Game for that season. The Rangers went to the Stanley Cup finals only to fall to Bobby Orr's Boston Bruins. Seiling was asked to represent his country once again for the '72 Summit Series and played in three games. His next season with the Broadway Blueshirts saw him collect career highs in goals and points.
The 1974-75 season saw Seiling play on three different teams. He was claimed on waivers by the Washington Capitals from the Rangers, but played just one game for them when a week later he was sent to the Toronto Maple Leafs. After a season and a half in Toronto, Seiling signed as a free agent with the St. Louis Blues where he was a veteran to a young defensive core. He was traded once more in the 1978-79 season to the Atlanta Flames, where he finished his career.
After playing hockey, Seiling coached junior hockey and actually gave one of his young players some advice telling him he couldn't skate, shoot or pass, but was good defensively. Luckily Paul Coffey paid no attention to his coach.