Pat O'Maley was born April 17, 1946 in Klamath Falls, OR to Joe and Mae O'Maley. Pat spent his younger years growing up in Howe, Idaho and began his rodeo career riding Jake Amy's cows. When Pat was thirteen years old, he moved to Nampa. Pat joined the Idaho Cowboy's Association in 1963 and finished 4th in the year end standings. He received the 1st Rookie of the Year presented in the ICA. In 1964, Pat joined the RCA (Professional Rodeo Cowboys Association) and filled his permit at Filer, ID and the Pendleton Round Up, Pendleton, OR. After graduating from Nampa High School, Pat traveled the winter circuit rodeos and the northwest rodeos. In 1965, he met and married Juanita Leguineche. Pat won the Idaho Cowboy's Association Bull Riding Title in 1971 and 1977. He won the Eastern Idaho Rodeo Association (ImPra) in 1976. Pat finished in the top three many times.
Pat joined the Senior Pro Rodeo Association when he turned forty and continued to compete for several years. He was known for riding some of the best bulls and always wanted to draw the rank bulls and often did. Pat always believed it was important to put something back into rodeo and when he was approached in 1976 about being a director for District 5 High School Rodeo he accepted and held that position for nearly 25 years. Both Pat and wife Juanita hold gold cards in District 5 and he is a gold card member of the ICA. Pat and Juanita started their stock contracting business with the help of Max Hoggan and George Walker and named their business Slash T Rodeo Company which was derived from the O'Maley cattle brand. Slash T Rodeo Co. has won numerous awards for their bucking stock and timed event stock and held the 3rd highest marked ride at the NFR in the bull riding, a score of 95.
The O'Maleys were awarded the Family of the Year Award in the Eastern Idaho Rodeo Association and both have received the Ivin Pollard Award in the ICA. Pat served as Vice President in the ICA and stock contractor director, a position he held for 7 years.
In 2006, Slash T helped start the 1st annual Daniel Dopps PrCA Memorial Rodeo in Mountain Home, ID that was started in memory of Daniel Dopps, a young bull rider who grew up around Slash T.