Tom Johnson suffered a season-ending hamstring injury in Sunday's loss to the Colts. The Vikings placed him on injured reserve this morning.

Johnson, a pass-rushing reserve defensive tackle who had played 53 percent of the defensive snaps before Sunday's game, has recorded 17 tackles and two sacks in 14 games this season. He also has one interception.

Johnson was a journeyman, playing in NFL Europe and in the CFL, before finding a home in Minnesota in 2014, coach Mike Zimmer's first season here. In three seasons with the Vikings, Johnson has totaled 14 sacks.

USA Today reported Monday night that Johnson had torn his hamstring. The 32-year-old is in the second year of a three-year, $7 million contract.

"We've been losing guys left and right. But nobody is going to pause the schedule for you and say, 'We'll let you get healthy and play you in a few weeks,'" defensive end Brian Robison said. "We'd love to have Tom out there but … we've got some other guys that need to pick up the slack."

With Johnson headed to IR, the Vikings brought back Toby Johnson, who was waived over the weekend to make room for Adrian Peterson. He'll join Linval Joseph and Shamar Stephen in the defensive tackle rotation.

"I was sad but I'd choose AP over me, too," joked Johnson, who knew it was a possibility his initial stint on the active roster might not last long.

Johnson, signed the day that Sharrif Floyd was placed on IR, was on the team for just five days before getting waived Saturday. He will stick around longer this time around and figures to make his NFL debut this weekend.

"I'm just thankful to be a part [of the team]," said Johnson, a second-year defender who spent time with the Jaguars, Titans and Bears last season before signing here. "And I definitely want to prove that I belong."