|Date of birth:||April 13, 1945|
|Place of birth:||Oklahoma City, Oklahoma|
|Date of death:||July 21, 1970(aged 25)|
|Place of death:||Thua Thien, South Vietnam †|
|Height:||6 ft 3 in (1.91 m)|
|Weight:||235 lb (107 kg)|
|High school:||Del City (OK)|
|NFL Draft:||1968 / Round: 8 / Pick: 199|
|Career NFL statistics|
|Player stats at PFR|
|Years of service||1968–1970|
|Unit||101st Airborne Division|
James Robert "Bob" Kalsu (April 13, 1945 – July 21, 1970) was an All-American tackle at the University of Oklahoma and an eighth-round selection in the 1968 NFL/AFL draft by the Buffalo Bills of the American Football League.
Kalsu was a starting guard for the Bills in 1968. He played the entire season and was the Bills' team rookie-of-the-year. Following the 1968 season, to satisfy his Reserve Officers' Training Corps (ROTC) obligation, he entered the U.S. Army as a second lieutenant and arrived in Vietnam in November 1969 as part of the 101st Airborne Division. He was killed in action on July 21, 1970, when his unit came under enemy mortar fire at FSB Ripcord near the A Shau Valley. His family, out of respect, refused to talk in detail about the circumstances surrounding his death.
When he had left for Vietnam, Lieutenant Kalsu had to say goodbye to his wife, Jan, and his daughter Jill. On July 23, 1970, two days after his death, Jan Kalsu gave birth to his son, James Robert Kalsu Jr, at the Kalsu home in Oklahoma City. Mrs. Kalsu was informed of her husband's death only hours later. Kalsu and former Cleveland Brown Don Steinbrunner were the only professional football players to lose their lives in the Vietnam War.
- FOB Kalsu in Babil, Iraq, was founded and named after him by the 105th Military Police Company from Buffalo, NY in early 2003. The name was chosen in a way to honor his sacrifice for his country and his connection to the Buffalo Bills.
- In 1999, NFL Films produced a feature on Kalsu that was nominated for an Emmy Award.
- In 2000, the Buffalo Bills added Kalsu's name to the Buffalo Bills Wall of Fame.
- In 2002, the replacement company at Fort Campbell was named in honor of him – 1LT J. Robert Kalsu Replacement Company.
- Del City High School's football stadium bears his name.
- There is a CrossFit Work Out of the Day (WOD) named in his honor.
- There is a post office in Del City, Oklahoma named for Kalsu. The legislation was signed in law by President Obama on Nov. 5, 2015, and the post office was dedicated on Feb. 5, 2016. The official name of the post office is the James Robert Kalsu Post Office, located at 4500 SE 28th Street in Del City, where Kalsu played high school football before enrolling at the University of Oklahoma.https://russell.house.gov/media-center/press-releases/congressman-russell-dedicate-james-robert-kalsu-post-office
- NFL Films – Remembering Bob Kalsu
- Pat Tillman
- Harry O'Neill - One of the two Major League Baseball players killed in World War II.
- Tim James – Basketball player who left his professional sports career and enlisted in the United States Army on September 12, 2008.
- Other American Football League players
- Don Steinbrunner
- Nack, William (July 23, 2001). "A Name On The Wall: Football player Bob Kalsu was the only U.S. pro athlete to die in Vietnam". Sports Illustrated. p. 60.
- Rockin’ the Rockpile: The Buffalo Bills of the American Football League, p.567, Jeffrey J. Miller, ECW Press, 2007, ISBN 978-1-55022-797-0
- Rockin’ the Rockpile, p.513
- "Bills honor Vietnam casualty". Beaver County Times. Pennsylvania. wire services. November 13, 2000. p. B4.
- Brown, Chris (May 30, 2011). "Bills teammates still remember Kalsu". Buffalo Bills. Retrieved February 19, 2016.
- Kalsu's memorial on The Virtual Wall website
- Benning soldiers adapt to new environment
- Fort Campbell 1LT J. Robert Kalsu Replacement Company
- Buffalo News story on Kalsu
- Oklahoma Sooners football – All-American: Bob Kalsu
- Career statistics and player information from NFL.com • Pro-Football-Reference • Databasefootball.com
- Sports Illustrated – cover – July 23, 2001
- Bob Kalsu at Find a Grave