The American former world number one, who retired in 2006, said his first steps into coaching were "challenging, interesting and educational".
The World number ones were named top seeds for next week's U.S. Open.
Andre Agassi beat Andrei Pavel of Romania 6-7, 7-6, 7-6, 6-2 in the US Open first round.
Defending champion Tommy Hass also moved into the second round at the US Clay Court Championships.
Agassi was beaten by Chilean Fernando Gonzalez while Roddick lost to Tim Henman in the semis.
Legendary Andre Agassi said Carlos Alcaraz combines the best qualities of Novak Djokovic, Roger Federer and Rafael Nadal but cautioned the tennis world against expecting the Spaniard to repeat the incredible feats of the 'Fab Three.'
Andre Agassi scored a 6-4, 7-6, 6-4 win over Italian Andreas Seppi in the second round
Tim Henman beat Andre Agassi in the first round of the Stella Artois Championships
Andre Agassi beat Greg Rusedski 7-6, 6-0 in the first round of the Dubai Open
The 35-year-old beat Brazilian Ricardo Mello in the first round of the Delray Beach International.
The American ace lost 6-4, 6-2 to Guillermo Garcia-Lopez in his comeback tournament in Florida
As a result of yesterday's defeat, Lleyton Hewitt of\nAustralia will replace Agassi at the top when the rankings.
Former tennis champions Andre Agassi and Steffi Graf are to invest in and advise Europe's leading secondary ticketing company Viagogo to help it expand, the group said on Wednesday.
Mardy Fish quit in the third set because of a back injury, allowing Andre Agassi to advance to the second round.
The victory gave Agassi a record six Key Biscayne titles.
Tommy Paul becomes first American man to reach French Open quarters in 22 years!
The Las Vegan waved farewell to the event he won in 1992 with a sad smile and a lump in his throat
Andre Agassi headlined a list of nominees for the International Tennis Hall of Fame following a sparkling career highlighted by eight Grand Slam titles and an Olympic gold medal.
Andre Agassi has pulled out of this week's Legg Mason Tennis Classic in Washington to preserve energy for the U.S. Open.
The top seed powered into the semi-finals of the Los Angeles Open with a 6-2, 4-6, 6-4 win over Paradorn Srichaphan.
No official reason was given for Andre Agassi pulling out of the Canadian Open.
Andre Agassi rallied from a set down to edge out Alex Calatrava and advance to the quarterfinals in Houston
Andre Agassi lost 6-4, 6-3 to Italian qualifier Andrea Stoppini in the Legg Mason Tennis Classic second round.
Novak Djokovic will keep Andre Agassi as his head coach when he returns to action after recovering from an elbow injury which forced him to cut short his season in July, Serbia's former world number one said on Tuesday.
It was like old times at Arthur Ashe Stadium as US Open fans gave Andre Agassi a rousing ovation as the former champion was honoured before Monday's opening night programme at Flushing Meadows.
Tennis star Andre Agassi's disclosure that he took a drug known as crystal meth and got away with it, is only one of the startling revelations in a new autobiography. Agassi also revealed that it was sport that he didn't choose and couldn't escape from.
We will look at alternatives if Dhoni doesn't deliver: Prasad
The former Australian Open champion said he is as hungry as ever to claim the tournament for the fifth time later this month.
