The 31 - year - old Velasco started 16 games at center for the Titans in 2012 and 11 for the Steelers in 2013 .
The 31 - year - old Velasco is a former undrafted free agent .
The 31 - year - old Velasco , a former undrafted free agent , started 16 games at center for the Titans in 2012 and 11 for the Steelers in 2013 .