The impressive Qi Jhong Stadium in Shanghai hosts the Masters Cup for the final time before it moves to London in 2009

Roger Federer is the big draw in the opening match of the day as he takes on France's Giles Simon

But Federer finds it hard going after winning the first set and going a break up in the second as Simon fights back

In a dramatic final set, Simon makes the decisive move by breaking the Federer serve to lead 5-3

Federer cannot recover and Simon serves out to complete a magnificent 4-6 6-4 6-3 victory

Andy Murray takes a tumble early on in his match against Andy Roddick but is otherwise untroubled as he wins the first set

Roddick saves a break point at the start of the second and storms back with five games in a row as he takes the set

Murray regains his focus and makes a strong start to the decider, breaking twice to move 5-0 clear

Murray wraps up his fifth win in seven meetings with Roddick and joins Simon at the top of the Gold Group

Murray can look forward to facing Simon on Wednesday with a place in the semi-finals up for grabs