Reich said that he believes the most important quality a NFL offense can possess is toughness. Several players for San Diego showed mental and physical toughness last season, with Ryan Mathews (ankle), Nick Hardwick (neck), Eddie Royal (toe), Jeromey Clary (clavicle), Chad Rinehart (toe), King Dunlap (head) and D.J. Fluker (knee) all playing with nagging injuries during the season. "You’ve just got to be mentally and physically tough," Reich said. "It’s a long season. It’s a tough game. So I think at the end of the day you need that physical and mental toughness to sustain and work hard every day, because really where you end up being successful is a consistent effort at getting better every day."