NFL teams build rosters to beat the best squad in the division or maintain the top spot with the ultimate goal of a Super Bowl title.
Intradivision competition is the initial measuring stick for a team's improvements. As quarterback Tom Brady leaves New England for Tampa Bay, the Buffalo Bills are probably sizing up the club that has won 11 consecutive AFC East titles.
Beyond division competition, front offices must address roster needs. Instead of going into April with glaring holes, general managers can fill voids with proven talent, taking pressure off hit-or-miss draft choices.