2009 marks the 5th year of the J-Block program where James' fans will have an opportunity to purchase J-Block merchandise and raise money for the Thomas Blake Sr Memorial Cancer Research Fund.

The J-Block originated at the Pilot Pen tennis tournament (New Haven) when James played there for the first time in 2005. A group of James' friends from his hometown in nearby Fairfield, CT joined forces to root for James at a time when he was just returning to professional tennis in full swing (after his bout with Zoster). James won the Pilot Pen tournament in 2005, which was televised on ESPN, and the J-Block became a national phenomenon. The excitement spilled over into the U.S. Open the following week and the J-Block continued to grow after each victory through James' epic quarterfinal match against Andre Agassi.

All J-Block merchandise and 100% OF THE GROSS PROCEEDS ARE DONATED TO CHARITY. J-Block merchandise can be purchased at all US Open Series events where James competes. To date, over $100,000 has been raised for charity through J-Block merchandise sales.