NFL Media's Albert Breer reports, via a source apprised of the injury, that Kyle Rudolph will undergo sports hernia surgery and miss about six weeks.
Rudolph was listed on the Vikings' Week 3 injury report with a groin issue after appearing to lose a step or two in the Week 2 loss to the Patriots.
The coaching staff had reasonable expectations of a career year for Rudolph in Norv Turner's tight end-friendly offense.
Rudolph's absence is especially disconcerting with RB Adrian Peterson and QB Matt Cassel out indefinitely. Rookie QB Teddy Bridgewater could have used Rudolph as another target, which will now make defenses jobs easier when facing the Vikes. Rhett Ellison and MarQueis Gray are next up on the depth chart.