Jaquiski Tartt is back from his IR stint. Eric Hartline-USA TODAY Sports

Accustomed to lengthier stints on injured reserveJaquiski Tartt made a quick return from his latest injury bout. The veteran safety is back on the 49ers’ active roster, missing the minimum three games.

San Francisco activated the first-string defensive back on Saturday, doing so after Tartt returned to practice earlier this week. However, the 49ers did not make the same move with Dre Greenlaw. The starting linebacker remains on IR, but he also returned to practice this week. The 49ers also promoted cornerback Davontae Harris from their practice squad.

Tartt suffered a knee contusion in Week 6. The seventh-year vet has battled more troublesome injuries — including a broken arm in 2017 and a turf toe issue last year, one that sidelined him into training camp — and has missed 31 games since the arm injury began this run of setbacks. He has missed at least four games in five straight seasons.

Nevertheless, the 49ers have continued to turn to Tartt as a starter. They did so for the first six games this season. Pro Football Focus slots Tartt 47th among safeties this season, a middle-of-the-pack position for a player who has made 56 career starts. Tartt has 32 tackles (three for loss) this year.

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