After four quiet seasons, Obomanu finally broke out in his fifth year with the Seahawks.
Obomanu caught 30 passes for 494 yards and four touchdowns, all career highs.
While the receiver was a weakness for the Seahawks, Obomanu was a nice complement to Mike Williams and also showed some promise for the future.
Obomanu proved himself on offense, going from a special teams player to becoming a starting wide receiver alongside Mike Williams.
The Seahawks needed someone to step up this season after the departure of veterans T.J. Houshmandzadeh and Deion Branch, and Obomanu did just that.
Despite dislocating his shoulder in the first quarter against the New Orleans Saints, Obomanu caught five passes for 43 yards in an upset 41-36 victory over the defending Super Bowl Champions.
The extension of Obomanu comes after the Seahawks locked up Mike Williams for another three years last Monday.
The Seahawks believe they have their receiving corps set for the next couple of seasons, and both of these deals prove that they have faith in Obomanu and Williams.
Obomanu set career highs this season, including catching five passes for 159 yards and a touchdown in a 42-24 loss to Kansas City in Week 12 loss.
Source: NFC West blogger Mike Sando of ESPN.com