49ers' Kittle battling groin injury ahead of Week 1

San Francisco 49ers tight end George Kittle's status for Sunday's game against the Chicago Bears is unclear due to a groin injury, head coach Kyle Shanahan announced Wednesday, according to Nick Wagoner of ESPN.

Kittle suffered the ailment Monday and is considered day-to-day, Shanahan added.

"Not sure. I was hoping he'd be good today," the coach said when asked about Kittle's status, per ESPN's Field Yates. "He did it a little on Monday and not feeling good today. We'll have to see day-by-day."

Kittle missed three games due to injuries last season. The 28-year-old finished the campaign with 910 yards and six touchdowns on 71 catches across 14 games.

The three-time Pro Bowler has played only one full season since entering the NFL in 2017. He's missed 13 games over the last three seasons.