It is way too early to be concerned about Jordan Spieth, but since people expect so much of him, a missed cut or a mini poor stretch elicits quick fears that something might be wrong.
For now, it is likely as simple as this: Spieth contracted mononucleosis in December, and the aftermath set him back -- both in energy and preparation.
So a tie for ninth at the Sentry Tournament of Champions, followed by a tie for 18th at the Sony Open before last week's missed cut at the Waste Management Phoenix Open should be viewed with some context.