He won championship titles in three divisions of USAC -Sprints, Stocks, and Champ Cars. He won the USAC Sprint Car title in 1963 and 1966, the USAC Stock car title in 1969 and 1970. The Champ Car title in 1973. His first USAC Stock Car start resulted in a runner-up finish in Phoenix, Arizona in January 1968, when he drove as a substitute driver for Norm Nelson.
McCluskey earned four USAC Midget Car wins, 23 USAC Sprint Car wins, 23 USAC Stock Car wins and five USAC Championship Car (national championship) wins. He was the USAC national champion in 1973. He started every Indianapolis 500 race from 1961 to 1979 except 1964, with a best finish of 3rd in 1973.
He represented the USAC series in the 1974 International Race of Champions.
McCluskey raced for the Holman and Moody team in a Ford GT40 Mk.IIB at the 1967 LeMans 24hrs of Endurance, France. During this event, McCluskey is credited with pulling Mario Andretti to safety-and thus saving his life-after Andretti had seriously crashed his Ford GT40 Mk.IV when a front brake locked.
McCluskey died on August 29, 1993, just five days after his 63rd birthday after a long battle with cancer. In 2004 the local United Sports Arizona Race Park hosted the Roger McCluskey Sprint Car Classic in his honor.
He was inducted in the National Sprint Car Hall of Fame in 1993.
He was also inducted into the Indianapolis Motor Speedway Hall of Fame in 2002.
He was also inducted into the Motorsports Hall of Fame of America in 2011.
Indy 500 results 
Other references 
-  Patrick Finley; "McCluskey memorial race at local dirt track gaining momentum each year"; December 30, 2006; Arizona Daily Star; Retrieved January 15, 2007
- NASCAR and IROC statistics
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