EDEN PRAIRIE, Minn. -- Minnesota Vikings coach Leslie Frazier said he was surprised Greg Jennings wasn't able to play Sunday against the Seattle Seahawks and couldn't predict whether the wide receiver will be available for his return to Lambeau Field next Sunday.
Jennings had been listed as probable for the game at Seattle but was inactive with a strained Achilles tendon.
"I have to be careful to predict that now, because I really felt like he'd be able to go in this last ballgame and it didn't work out," Frazier said. "So I have to watch him go through practice and see him do some things to be certain."
Jennings first showed up on the Vikings' injury report last Thursday, after he woke up that morning feeling pain in his left heel. He was limited in practice Thursday and Friday, but Frazier said on Friday he had no concerns with the receiver's availability for Sunday.
His first inkling that Jennings might not be available came before a team meeting Saturday, Frazier said, and even then, he planned on the receiver being able to play. Jennings said Sunday he had the same plan.
"Obviously when you wake up, you want to play," Jennings said Sunday. "My mindset was that I was going to go out there and play. But I woke up and it didn't feel good enough to play. I wasn't going to put myself or my team in that position."
Jennings caught just one pass for nine yards in his first game against the Green Bay Packers last month. When asked Sunday if he expected to play at Lambeau, Jennings said, "That's the game plan."
Because the 30-year-old receiver's situation caught even Frazier by surprise Sunday, nothing is certain.
"I thought he'd be fine when he got up [Sunday] to work out and see how he'd be," Frazier said. "Just wasn't able to do it, so we had to scratch him. That was a tough one because we did expect him to be able to play."
In other injury news, cornerback Josh Robinson will miss four to six weeks with a fractured sternum, Frazier said Monday.
Frazier wasn't sure when Robinson got injured Sunday but it's possible the second-year cornerback could miss the rest of the season.