ST. LOUIS — Harrison Smith informed fellow Vikings defensive back Captain Munnerlyn that he’s on his heels.

Munnerlyn has five interception returns for touchdowns in his six-year NFL career. Smith got his third on Sunday, going 81 yards in the fourth quarter of a 34-6 win over St. Louis at the Edward Jones Dome.

“I’m trying to catch up with Captain,” the third-year Viking said with Munnerlyn within earshot. “He’s got five. I’m two behind.”

Smith returned two interceptions for touchdowns as a rookie in 2012 before not getting any in 2013, when he missed eight games due to injury. Smith now has his three in 25 career games, a much better ratio than Munnerlyn’s five in 78 games.

“Just a good call for the route,” Smith said of Sunday’s interception off Rams backup quarterback Austin Davis. “Got a chance to get a jump on it, and then (a block by defensive end Everson Griffen) made it easy for me to get to the end zone.”

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