After the 2008 season, Raji was invited to participate in the 2009 Senior Bowl, where he recorded one assisted tackle in a losing effort for the North team. Raji's performance in Senior Bowl practices helped increase his profile with draft scouts.
Raji was selected in the first round (ninth overall) of the 2009 NFL Draft by the Green Bay Packers. Raji and the Packers struggled to come to an agreement on a contract, leading to Raji leaving Green Bay for a brief period during training camp. After holding out for 13 days, Raji signed a five-year/$28.5M contract with $18.5M in guaranteed money.
Raji was expected to start the 2009 season as the Packers backup nose tackle in their new 3-4 defense, but missed the first two games of the season due to an ankle injury. Raji ended up playing 14 games as a rookie, starting one, and recorded 25 total tackles.