Here's Pioli's career in a nutshell...
When the Browns moved to Baltimore after the 1995 season, Pioli stayed with the team and was promoted to Pro Personnel Coordinator for the Ravens' 1996 season and was part of the personnel staff that drafted HOFer Jonathan Ogden and Ray Lewis.
New York Jets
Pioli was credited with the signing of a number of veteran free agents, including Kevin Mawae, Vinny Testaverde and Bryan Cox, who played critical roles in the Jets' rebuilding process which helped the team rebound from a 1-15 record in 1996 to a 12-4 record in 1998.
New England Patriots
When Belichick accepted the Patriots' head coaching position in 2000, Pioli became vice president of player personnel. The two eventually became the first personnel director/head coach tandem in league annals to win three Super Bowls during a four-year span (2001–2004). He and Belichick split the duties usually held by a general manager on most other NFL teams, though Belichick had the final say.
Pioli’s skills as a talent evaluator helped create a consistent championship contender in New England. He was regularly recognized for his ability to build a team, not simply collecting individual talent, helping to make the Patriots a "model franchise." From 2000–2008, the Patriots had an NFL-best record of 102-42 (.708) and registered 14 playoff victories. Pioli worked in close coordination with Belichick, bringing players to the Patriots who fit into the framework of the club’s team concept. 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. The most-notable selection in an NFL Draft by Pioli and Belichick was quarterback Tom Brady, who was chosen 199th overall in the 2000 NFL Draft.
In his tenure with the Patriots, Pioli earned promotions from Assistant Director of Player Personnel to Director of Player Personnel in 2001, and to Vice President of Player Personnel in 2002. Also, Pioli earned a contract extension in 2005 after being pursued by several NFL teams to become general manager.
In 2007, the Patriots finished their regular season with a 16-0 record, a first in NFL history. The team advanced to Super Bowl XLII but lost to the New York Giants 17-14 and failed to finish the season with a perfect 19-0 record. Prior to the season, Pioli executed trades to acquire wide receivers Wes Welker and Randy Moss, both of whom helped the Patriots set multiple NFL records on offense.
Kansas City Chiefs
The Chiefs information is pretty bad... including signing Matt Cassel, and trading Tony Gonzalez for a draft pick which eventually turned into Javier Arenas.
2009: Tyson Jackson, Ryan Succop
2010: Eric Berry, Dexter McCluster, Jon Asamoah, Kendrick Lewis
2011: Rodney Hudson, Justin Houston
2012: Dontari Poe, Junior Hemingway