Woods' encouraging performance comes three weeks before the Masters
Tiger Woods continued his preparations for next month's Masters with a solid performance on the opening day of the Tavistock Cup in Florida.
Woods shot a better-ball score of 64 with partner Arjun Atwal for Albany to finish on eight under at the halfway stage in the four-club event.
Graeme McDowell and Retief Goosen had the joint-best score of the day with a 12-under 60 for Lane Nona.
English pair Justin Rose and Ian Poulter shot 61 for Albany.
Brian Davis and JB Holmes also recorded a 60 for Isleworth, who finished the day a cumulative 30 under.
With singles to come, Albany are two behind, three ahead of Lake Nona with Surrey club Queenwood 14 adrift.
Woods entered the competition, a four-club event similar in structure to the Ryder Cup, on the back of a morale-boosting top-10 finish at the WGC-Cadillac Championship.
And the former world number one backed up his closing-round 66 in Doral with a further encouraging performance ahead of the Masters, which begins on 7 April.
Arjun Atwal, Ernie Els, Trevor Immelman, Ian Poulter, Justin Rose, Tiger Woods
Isleworth (United States)
Robert Allenby, Stuart Appleby, Brian Davis, JB Holmes, Lee Janzen, Sean O'Hair
Lake Nona (United States)
Ross Fisher, Graeme McDowell, Retief Goosen, Henrik Stenson, Peter Hanson, Oliver Wilson
Thomas Bjorn, Soren Kjeldsen, Darren Clarke, Paul McGinley, David Howell, Adam Scott