Smith suffered a torn MCL in his right knee in Saturday's divisional-round loss to the Patriots, Paul Kuharsky of 104.5 The Zone Nashville reports.
Smith was carted off the field in the second half after having his right knee rolled up on, but the initial diagnosis could have been far worse. The 22-year-old is likely to undergo surgery in the next couple of weeks, and he could be ready to resume physical activity in as little as six weeks.
Smith caught two of four targets for 15 yards in Saturday's 22-21, wild-card round win over Kansas City.
Two plays before Eric Decker caught the go-ahead touchdown, Smith made a pivotal, 10-yard catch on 3rd-and-2. The rookie tight end hasn't moved the needle much in fantasy circles this season, but he's quietly turning into a solid all-around player.
Smith (concussion) practiced fully Tuesday and, barring any setbacks, will play Sunday against the Chiefs, Terry McCormick of TitanInsider.com reports.
Smith had 18 catches for 157 yards and two touchdowns in his rookie campaign. The Chiefs' defense allowed the ninth-fewest fantasy points to tight ends this season, and with just eight targets in his last six games, Smith shouldn't be considered for fantasy matchups in the wild-card round.
Smith caught all three of his targets for 12 yards in Sunday's 15-10 win over the Jaguars.
Smith finishes his rookie season with 18 catches for 157 yards and two touchdowns. Expect Delanie Walker's backup to be a little more involved in year two, as Smith has an all-around skill set resembling that of his veteran superior.
Smith made a 13-yard grab while getting two targets in Sunday's 27-23 loss to the Rams.
Smith hasn't been much of a factor with top tight end Delanie Walker healthy. There's little reason to expect much from him in next week's finale against the stout Jaguars defense.