The Russian is one of those fancied to wrest the title from world number one Roger Federer this time.
The Wimbledon champion split with his coach Peter Lundgren after the most successful year of his career.
Roddick ended the season ranked No. 1 but Wimbledon champion Federer is being hailed as the best player in men's tennis.
In the semi-finals, Agassi beat German fourth seed Tommy Haas, while Johansson beat fellow-Swede Michael Ryderstedt.
The 34-year-old said he will not be satisfied by one more Grand Slam crown to add to his haul -- he wants to win all four in 2005.
Andre Agassi beat Andrei Pavel of Romania 6-7, 7-6, 7-6, 6-2 in the US Open first round.
Andre Agassi beat Spain's Tommy Robredo while Marat Safin knocked out Peruvian Luis Horna at the Madrid Masters.
Andre Agassi served up his traditional late-night feast at the U.S. Open on Monday, beating fellow American Robby Ginepri to move into the second round.
The Australian second seed eased past Frenchman Olivier Mutis 7-6, 6-1 to reach round two of the $380,000 Long Island Cup.
Top-seed Andre Agassi easily advanced to the quarter-finals of the Washington Classic with a victory over Kristian Pless.
The Las Vegan waved farewell to the event he won in 1992 with a sad smile and a lump in his throat
Rafael Nadal beat Andre Agassi 7-6, 6-2, 6-4 in the third round.
Andre Agassi overcame a slow start to beat Boris Pashanski 2-6, 6-2, 6-4, 6-3 in the first round
Mardy Fish quit in the third set because of a back injury, allowing Andre Agassi to advance to the second round.
The pair jointly hold the record for the fastest recorded serve at 149 mph (240 kph), have met twice before with honours even.
Roddick edged past Andre Agassi while Grosjean easily beat Tim Henman in the semis of the Stella Artois Championship.
The 34-year-old American is only the sixth player since men's tennis turned professional in 1968 to achieve the feat.
Andy Murray is yet to reach his maximum potential and should only get better but the world number one has not seen the back of Novak Djokovic, according to eight-times Grand Slam champion Andre Agassi.
As a result of yesterday's defeat, Lleyton Hewitt of\nAustralia will replace Agassi at the top when the rankings.
French qualifier Jerome Haehnel ousted the veteran American in straight sets.
Look who we spotted at the Flushing Meadows this year.
The top seed suffered a shock defeat in the first round of the St Poelten Grand Prix to Serbian Nenad Zimonjic.
