WR Mike Walker has endured a career's worth of issues i...

WR Mike Walker has endured a career's worth of issues in just two seasons with the Jaguars.

He's been plagued by a nagging knee injury, slowed by a staph infection that required hospitalization and stunned by the deaths of a close friend and his father.

Walker is ready for change. He's already swapped jersey numbers and has plans to alter his name. He's also healthy for the first time in years.

"I feel like where I'm at it's do or die," Walker said. "I have all the potential. I'm in a state of mind where it's just time to do it. No more excuses, no more injury problems."

The Jaguars are counting on him more than ever, too.

After the team parted ways with Matt Jones, Reggie Williams, Jerry Porter and Dennis Northcutt during the offseason, Walker suddenly had more tenure in Jacksonville than any receiver on the roster. And when training camp began Monday, Walker found himself trotting out with the first team alongside seven-time Pro Bowler Torry Holt instead of waiting his turn and lining up with backups.