PITTSBURGH (AP) — Steelers coach Mike Tomlin believes NFL teams improve the most between Week 1 and Week 2. He might want to hope he’s wrong this time around after Pittsburgh stumbled its way to a 31-17 loss to Seattle in its home opener. Aaron Rodgers threw two interceptions, and the defense struggled. Rookie Kaleb Johnson made a costly error, allowing a Seattle touchdown. Tomlin said there is plenty to clean up, particularly on a defense that has allowed nearly 800 yards through two games. Pittsburgh heads to New England in Week 3.