A look at a player who gave his team a significant boost in Week 10.
It showed Sunday during a potentially pivotal 36-18 victory over the Arizona Cardinals.
Hasselbeck's presence and overall strong play energized a Seattle offense that hadn't exceeded 164 yards in either of its previous two games.
The Seahawks finished with 490 yards, easily a season high. Hasselbeck passed for 333 yards, his highest total since 2007 and tied for the 10th-highest total of his career. He averaged 9.8 yards per attempt, his highest average in a game since 2005.
"When I look back at this game, the thing that stands out the most is really Matt's performance," coach Pete Carroll told reporters Monday.
Before this season, Hasselbeck had almost never played with a wide receiver possessing Mike Williams' combination of size and strong hands. Most of Hasselbeck's throws relied more on timing than exploiting physical mismatches in the secondary. The one time Hasselbeck did have a super-sized target at wide receiver, in 2005, he helped Joe Jurevicius set a career single-season high for receptions.
Williams has allowed Hasselbeck to throw more aggressively without risking interceptions. The two connected 11 times Sunday for 145 yards.
Seattle's offense dropped off when Hasselbeck left the game after suffering two cracked bones in his left wrist. Hasselbeck found Williams four times for 54 yards after returning in the second half. The Seahawks expect him to start against New Orleans in Week 11. As Hasselbeck showed Sunday, they'll need him.