Baltimore Ravens tailback Mark Ingram, who wasn't spotted at Tuesday's practice, felt tightness in his calf when running last week, a source told Ian Rapoport of NFL Network.

Ravens head coach John Harbaugh said Friday that Ingram was on track to play in the divisional round and would be practicing at "full speed" this week. He was less open on Tuesday, deferring to the injury report when asked about Ingram's status, according to Luke Jones of WNST.net.

Ingram initially suffered a calf injury in Week 16 and was given a three-week timetable. The 30-year-old helped Baltimore become the top-ranked rushing team in the NFL during the regular season, scampering for 1,018 yards and 10 touchdowns.

Despite the apparent setback, Ingram still has a chance to play in the Ravens' playoff opener and hoped to avoid re-injury by backing off his plan to practice, according to Rapoport.

Ingram was one of four Ravens who were absent from the opening portion of Tuesday's practice, joining safety Earl Thomas, cornerback Jimmy Smith, and offensive lineman Parker Ehinger.

Baltimore, which is seeded first in the AFC playoffs, will host the Tennessee Titans on Saturday.