ORLANDO, Fla. -- Left tackle Tyron Smith and center Travis Frederick have contracts with the Cowboys through the 2023 season.

Right guard Zack Martin's rookie contract runs through 2017. Dallas is expected to exercise the fifth-year option on his deal in hopes of working out a long-term agreement. The goal is to keep the three perennial Pro Bowlers together for their entire careers.

Standing next to Smith and Frederick after Friday's Pro Bowl practice, Martin was asked what it would mean to him to play alongside those two for his entire NFL career.

"It would be huge," Martin said. "I'm not real worried about that. I'm worried about playing. Obviously I'll be here for hopefully a long time. These guys make it fun to come to work every day.

"Hopefully we can get something done."