The Seattle Seahawks might not have one of their best offensive players in the lineup Sunday when they square off against the New England Patriots at Gillette Stadium.

Seahawks running back Kenneth Walker is listed as doubtful on the official Week 2 injury report released Friday. Walker is battling an oblique injury suffered in the Seahawks' Week 1 win over the Denver Broncos.

He played a major role in that season-opening victory, tallying 103 rushing yards and one rushing touchdown on 20 carries. If Walker doesn't play, second-year running back Zach Charbonnet is expected to receive an increased workload. He tallied 41 total yards and a receiving touchdown in Week 1.

Kickoff for Patriots-Seahawks is scheduled for 1 p.m. ET.