According to Mubadala World Tennis Championship of ABU DHABI's exhibition tournament , Rafa is scheduled to play his first match on Friday, December 31st.
Versus, either Robin Soderling or Jo-Wilfried Tsonga, in the second match of the day. The first match starts at 3 PM local time, 11 AM GMT, 12 PM CET, 6 AM EST.

Also listen to Rafa's recorded message inviting us to watch him defend his title ..