Arizona safety Vince Miles (36) congratulates Arizona safety Tra'Mayne Bondurant (21) after his interception against Colorado in the second quarter of their Pac-12 game at Arizona Stadium, Saturday November 10.

Kelly Presnell/Arizona Daily Star

Safety Vince Miles, who played in all 13 games last season and had 28 tackles, has voluntarily left the program because of an undisclosed medical issue UA officials confirmed today. 

His name has been removed from the team's online roster. Miles, a native of Mountain View, Calif., was a walk-on; he joined the UA in January 2012. 

Miles recovered a fumble in the UA's 39-36 win over USC and also had a 1/2 tackle for a loss for the Wildcats on the season. His best performance was in the UA's 34-24 win at Utah, where he had five solo tackles and four assists. 

He also had five tackles (three solo, two assists) in the team's New Mexico Bowl win over Nevada.

Miles was expected to compete for playing time in the secondary again this season.

Read more in Thursday's Arizona Daily Star.