Mackert at Maryland in 1919
|Date of birth||February 2, 1894|
|Place of birth||Sunbury, Pennsylvania, United States|
|Date of death||February 12, 1942(aged 48)|
|Place of death||Washington D.C., United States|
|Position(s)||Tackle, Center, Fullback|
|Height||6 ft 2 in (188 cm)|
|Weight||200 lb (91 kg)|
|Battles/wars||World War II|
Charles Leroy "Roy" (Bob) Mackert (February 2, 1894 – February 12, 1942) was an American football player. He played professional football for the Rochester Jeffersons for one season in 1925. Mackert played college football for Maryland, and returned there in 1935 as the line coach.
Mackert was born on February 2, 1894 in Sunbury, Pennsylvania. He attended Lebanon Valley College and then the University of Maryland. He played as a fullback on the Maryland football team during the 1919 and 1920 seasons.
He played for the Rochester Jeffersons in the National Football League for the 1925 season. Mackert saw action in two games, including one start, as a center and a tackle. By November 1925, George Mulligan of the Hartford Blues signed Mackert to play for the team alongside Obie Bristow, Steve Owen and Don Miller of Notre Dame's Four Horsemen. The Blues would become an NFL franchise a year later in 1926.
In 1926, he returned to his alma mater as an assistant alongside Burton Shipley under head coach Curley Byrd. In 1935, he served as the line coach under Jack Faber. During World War II, Mackert enlisted in the United States military. Although several sources, including the Pro Football Hall of Fame claim that he was killed during the war, he died at a hospital in Washington D.C. after a lengthy illness unrelated to the conflict. At the time of his death, he was the athletic director at the University of Maryland.
The Charles Leroy Mackert Award was named in his honor and acknowledged the most outstanding wrestlers at the University of Maryland. He was inducted into the University of Maryland Athletic Hall of Fame in 1982.
- John Maxymuk, Rochester Jeffersons (1920-25), Uniform Numbers of the NFL: Pre-1933 Defunct Teams, retrieved June 12, 2009.
- Maryland Beaten By Tiger Warriors; Team from the South Falls Before Princeton, The New York Times, October 10, 1920.
- Roy Mackert Past Stats, Database Football, retrieved June 12, 2009.
- Year-By-Year Results, 2007 Terrapin Football Record Book, University of Maryland, 2007, retrieved January 16, 2009.
- Roy Mackert Statistics, Pro Football Reference, retrieved June 12, 2009.
- Hogrogian, John (1982). "The Hartford Blues Part I" (PDF). Coffin Corner. Professional Football Researchers Association. 4 (8): 1–5.
- Reveille, p. 223, University of Maryland, 1927.
- Old Liners need new backfield this season, The Evening Independent, August 30, 1935.
- http://www.profootballhof.com/history/release.aspx?release_id=88 Football's wartime heroes, The National Football League’s World War II Casualties, Pro Football Hall of Fame, 2010, retrieved September 10, 2010.
- "Charles Leroy Mackert". Oldest Living Pro Football Players. Retrieved March 5, 2013.
- Terps honor Bob Kopnisky, Pittsburgh Post-Gazette, May 6, 1965.
- University of Maryland Athletic Hall of Fame: All-Time Inductees, University of Maryland, retrieved June 12, 2009.