Beardmore was born in 1939. He attended Annapolis High School in Annapolis, Maryland, where he first played lacrosse in 1955. He then went on to preparatory school at the Severn School in Severna Park, Maryland. He was named an All-MSA player in 1958. Beardmore attended college at the University of Maryland, where he played lacrosse and received honorable mention All-America honors in 1960 and first team honors in 1961 and 1962. He set the school record for a midfielder with 108 career points from goals and assists. That mark was later broken by one of Beardmore's own players: Frank Urso. Beardmore played in the 1962 North/South Senior All-Star Game. In that game, he helped the South to a 14-4 win with a four-goal effort. Beardmore continued playing lacrosse after college with the University Club in 1963 and 1964. He served as its co-captain and in 1963 led it to the National Club Championship. He then played for the Severna Park Club in 1970 and 1971. In 1964, Beardmore became the lacrosse coach at the Severn School, where he served for two seasons and amassed a 19-3 record. In 1965, he led the school to its first MSA championship since 1929.
Coaching career
Early positions
In 1967, Beardmore joined the collegiate coaching ranks at Hobart College. He led the Statesmen to a 9-5 record and a share of the Laurie Cox Division Championship. The following season, he took over as head coach at the University of Virginia. That season, he guided the Cavaliers to a 7-6 record, but the following year, in 1969, the team improved to 7-3 and captured the Atlantic Coast Conference regular season championship.
Maryland
In 1970, Beardmore returned to his alma mater, where he remained for 11 years and amassed a 107-31 record. During his tenure, Maryland won seven outright ACC championships and shared another. Beardmore led Maryland to the 1973 and 1975 NCAA tournament championships. Maryland finished as runners-up four times after losing in the tournament finals in 1971, 1974, 1976, and 1979. In 1973, he was awarded the F. Morris Touchstone Award as the Division ICoach of the Year. In 1974, Sports Illustrated wrote about Beardmore, "his last two teams have truly carried his stamp. They have been fastbreaking, aggressive and deep with midfielders who can run opponents into the ground and score like attackmen." That year, Beardmore also served as the Maryland men's soccer head coach and amassed a 5-3-5 record. In 1975, Maryland played only six NCAA games, the minimum required to be eligible for the NCAA tournament, with the rest of their games against non-association teams "for the good of the game" in Beardmore's words. The Terrapins lost two of their six NCAA games, did not secure the ACC championship, which went instead to Virginia, and almost failed to qualify for the NCAA tournament. Nevertheless, Maryland advanced through the tournament and to the championship game, where they defeated Navy, 20-13. After the 1980 season, Beardmore resigned his post at Maryland in order to enter private business. Defensive assistant coachDino Mattessich was promoted to head coach as Beardmore's replacement.
Professional teams
In 1974, in the midst of his tenure at the University of Maryland, Beardmore was hired as the head coach of the Maryland Arrows of the National Lacrosse League. Before the season started, however, the franchise elevated him to the position of general manager. Beardmore coached the Washington Wave of the short-lived Eagle Pro Box Lacrosse League in 1987. He led the team to 2-4 regular season record, but advanced to the championship game in the playoffs, where they were defeated, 11-10, by the Baltimore Thunder.
