Detroit Lions John Penisini RETIRED?!
Lions John Penisini waived - Fantasy Guru
3 free agent defensive tackles the Detroit Lions could sign
Lions' John Penisini Reveals Thoughts About Retirement
Lions DT John Penisini announces his retirement
Lions John Penisini retires from NFL after two years
Detroit Lions re-examining UDFA process after third rookie retires
Former Detroit Lions DT John Penisini is unretiring, now a free agent - Pride Of Detroit
It's not for everybody - Lions HC on rookie's retirement from the NFL