What are the biggest holes the Kansas City Chiefs' must fill in the NFL Draft?

The NFL Draft is two weeks away, which means it’s a good time to take a big-picture look at the Kansas City Chiefs’ roster.Let’s go over the team’s current depth chart, with an eye toward each position’s draft outlook.QuarterbacksStarter: Patrick MahomesBackup: Justin FieldsStill need: Future clarity on Mahomes’ knee. Coach Andy Reid continued positive reports regarding Mahomes’ knee rehab during last week’s NFL annual meeting, so it’s still probable that the QB could return for his previously stated Week 1 goal. If Mahomes does have a setback, though, Reid said he’ll feel confident with Fields, whom he views as “more than a gadget guy.”Draft outlook: It would be a shock if K.C. used any draft pick on a quarterback.