Pioli and Belichick 's teams were noted for the depth of talent at all the positions .
Pioli and Belichick 's teams were used an effective combination of draft picks , free - agent signings , and trades to continually upgrade their roster .
Pioli and Belichick 's teams were noted for the depth of talent at all the positions and used an effective combination of draft picks , free - agent signings , and trades to continually upgrade their roster .