Woods skipped the back nine of the pro-am at the Barclays because he was suffering from a stiff neck and back.
He continued to walk with his playing group but only chipped and putted and blamed a soft hotel bed for his problems.
Woods has suffered from an elbow injury this season and was also pictured holding his back during the recent US PGA Championships.
When asked if he would be requesting a new bed, Woods smiled and said: "We'll have something."
The Barclays at Liberty National in New Jersey is the first event of the FedEx Cup playoffs and begins on Thursday.