Bob Richer was born April 28, 1971 in Cowansville, Quebec. The 4th choice, 47th overall of the Buffalo Sabres in the 1971 NHL Entry Draft, Richer was a graduate of the Quebec Junior Hockey League's Trois-Rivieres Ducs where he had seasons of 51 and 91 points in 1969-70 and 1970-71.
The 1971-72 season saw Bob Richer make his professional hockey debut, splitting his time with the Cincinnati Swords of the American Hockey League and Charlotte Checkers of the Eastern Hockey League. Richer was a member of the 1972 Eastern Hockey League champions before he making his NHL debut with the Sabres during the following season.
Although he spent the majority of the season with the Swords, Bob Richer played in his only three career NHL games with the Sabres during the 1972-73 season. Unable to secure a roster spot with the Sabres in 1973-74, Richer returned to Cincinnati where he would play in his final season of professional hockey.
In three career NHL games, Bob Richer registered no points.