Former Detroit Lions DT John Penisini is unretiring, now a free agent - Pride Of Detroit
Detroit Lions add RB Justin Jackson to depleted backfield
Lions DL John Penisini Retires
Panthers add defensive lineman John Penisini
Detroit Lions John Penisini announces NFL retirement - Sports Illustrated Detroit Lions News, Analysis and More
Have other NFL players like Khari Willis retired for religious reasons? - AS USA
Free-agency tracker: Chiefs news, trades, updates, reports, signings - Arrowhead Pride
Lions 53-man roster projection: Who's in, who's out after preseason opener? - The Athletic
Detroit Lions claim defensive tackle off waivers after another retires
The REAL Reason Detroit Lions DT John Penisini Is Not Playing Anymore..
Report: Lions signing OT Kendall Lamm – The Oakland Press
Ex-Lions Defender John Penisini Coming out of Retirement
Lions defensive lineman John Penisini announces retirement
Detroit Lions DT John Penisini announces retirement
3 former Detroit Lions draft picks who might be done in the NFL