The Seahawks defeated the Buccaneers 10–6 despite recording only nine first downs and being shut out in the second half. The Seahawks intercepted Brad Johnson and Chris Simms and limited the Bucs to just 271 total yards.
The Seahawks home opener was a 34–0 shutout of the 49ers where they intercepted Ken Dorsey twice and limited the Niners to just 175 yards. It was San Francisco's first shutout loss since losing to the Atlanta Falcons 0-7 in 1977.
The Seahawks suffered their first home loss since 2002. The Rams were bullied in the first half and fell behind 24–7, but in the second half Marc Bulger threw two touchdowns as the Rams outscored Seattle 20–3; tied 27–27 the game went to overtime and Bulger threw three passes – the last a 52-yard score to Shaun McDonald and the 33–27 Rams win.
A week after losing to one participant in Super Bowl XXXVI the Seahawks fell to that game's winner as the Patriots reached a league-record 20th consecutive win (regular and postseason) 30–20. Matt Hasselbeck, a former Patriots ball boy whose dad Don Hasselbeck played in Foxboro alongside Steve Grogan, threw for 349 yards but was intercepted twice.
Playing in Sun Devil Stadium the Seahawks' previous road woes resumed with four interceptions thrown by Matt Hasselbeck and the Seahawks limited to just 257 total yards in a 25–17 loss. Seattle erased a 16–3 gap (the go-ahead score came when Ken Lucas picked off Josh McCown and ran back a 21-yard score) but gave up a safety, then gave up a 23-yard touchdown by Emmitt Smith in the fourth quarter.
Despite seven penalties for 55 yards the Seahawks shot down the 49ers at Candlestick Park 42–27, rushing for 184 yards and two touchdowns alongside 285 yards and three scores from Matt Hasselbeck. The Seahawks ended the game when they intercepted Tim Rattay and ran back a 23-yard score in the fourth.
Hosting Monday Night Football the Seahawks' roller-coaster of a season continued as they fell to 6–6 to the now-5-7 Cowboys. The Hawks led 14–3 after one quarter, but in the second the Cowboys scored 23 points (botching a two-point attempt after Vinny Testaverde's touchdown to Terrance Copper). In the fourth Matt Hasselbeck (414 total yards) erupted to three touchdown drives, two of them ending in Shaun Alexander rushes, a 19-yard score to Jerheme Urban, and a two-point conversion to Darrell Jackson, but the Seahawks could not hold onto a 39–29 lead; Testaverde found Keyshawn Johnson for a 34-yard touchdown with 1:54 to go; the Cowboys kicked onsides and recovered, then four Julius Jones rushes ended in a 17-yard score with 37 seconds remaining. The Seahawks' final drive petered out and the Cowboys had the stunning 43–39 win.
The Seahawks rallied to beat the Vikings 27–23 on 334 yards and three touchdowns by Hasselbeck and 112 more rushing yards from Shaun Alexander. Darrell Jackson competed despite learning on game morning that his father had died; he caught ten passes for 135 yards and a go-ahead touchdown.
Matt Hasselbeck managed two touchdowns in the first half but the game collapsed as the NY Jets scored 24 points in the first half then shut out the Seahawks while adding two more Chad Pennington touchdowns, marred by a missed PAT. Curtis Martin rushed for 134 yards and two scores, outpacing the entire Seahawks backfield (88 rushing yards).