Luna attended Huntsville High School, where he was a multi-sport athlete. As a junior in football, he was named honorable-mention Class A All-state. As a senior, he recorded 1,159 total yards for a weak Huntsville team. He averaged 7.7 yards per carry, while scoring 108 points on 13 touchdowns and 30 of 34 extra points. He punted 32 times for a 39-yard average. At the end of the season, he received National High SchoolAll-American, Class 2A All-state, All-TVC and All-Southern honors. He received All-TVC honors in basketball as a senior. He also practiced baseball.
College career
Luna accepted a football scholarship from the University of Alabama. In his first season, the Southeastern Conference allowed freshmen to play varsity football, so he was able to post 10 carries for 76 yards, 2 rushing touchdowns, 4 receptions for 86 yards and one receiving touchdown. As a sophomore, he became a starter in a backfield that also included future pro football hall of famer Bart Starr. He was third on the team with 100 carries for 342 yards and 6 touchdowns. He also was the team's placekicker. As a junior, he was second on the team with 80 carries for 309 yards and 2 touchdowns. He is probably best remembered for connecting on a fourth quarter field goal from 28-yards, helping his team beat Auburn University 10–7 in the Iron Bowl. The victory improved Alabama's all-time record against Auburn to 9–8–1. As a senior, he was third on the team with 75 carries for 310 yards, while handling punting duties. He finished his college career with 265 carries for 1,037 yards, 9 rushing touchdowns, 34 receptions for 570 yards and 5 receiving touchdowns. He also practiced baseball during his 4 years in college. In 2006, he was inducted into the University of Alabama AthleticsHall of Fame.
Professional career
Pittsburgh Steelers
Luna was selected by the San Francisco 49ers in the sixth round of the 1955 NFL Draft. He was converted into a defensive back during training camp. He started in 12 games as a safety and Punter. He tallied 2 interceptions, 63 punts for 2,558 yards and had 3 punts blocked. From 1956 to 1957 he served in the United States Army. He also was a player-coach for the Fort Hoodfootball team for two seasons. On January 23, 1958, he signed with the BC Lions of the Canadian Football League. He returned home before the start of the season, after his baby was born and required to have a surgery. On September 15, 1959, he was traded to the Pittsburgh Steelers in exchange for a future draft choice.
Pittsburgh Steelers
In 1959, he returned to the NationalFootball League afte being an assistant football coach at the University of Alabama the previous year. He started in 11 games as a safety and punter. He registered 3 interceptions and 63 punts for 2,563 yards.
In 1963, he signed with the Tuscaloosa Warriors of the Southern Professional Football League. The Warriors were under the ownership of Eddie Brightwell with both Luna and Bobby Jackson serving as player-coaches. The team finished with an 8-7 record. In 1964, it was relocated to Columbus, Mississippi and was renamed as the Columbus Warriors.
Personal life
On June 21, 1958, he was hired as an assistant football coach under Paul "Bear" Bryant. In 2006, he received the Paul "Bear" Bryant Award from the University of Alabama. He was the owner of Luna Construction, LLC.