Kansas City Chiefs' star RB Isiah Pacheco returns after missing two games with a shoulder injury.

Chiefs cautious about rushing him back, prioritizing his health for the playoffs.

Pacheco's return crucial as Jerick McKinnon placed on IR.

Pacheco's impressive season stats: 176 carries, 779 yards, and seven touchdowns in 12 games.

Chiefs currently 9-5 and favored to win against the Raiders in Week 16.

Win secures eighth consecutive AFC West title for the Chiefs.

Remaining regular-season games against the Bengals and Chargers.

Chiefs eyeing AFC's top seed with a strong finish.

Will Pacheco be the X-factor in their quest for playoff success?