Even his recent string of tennis tournament wins hasn't helped Andre Agassi persuade his wife, Steffi Graf, to join him for mixed doubles at the French Open in May.

"It's hard to convince someone who has five times as many tournaments as I have," he said.

Graf won 107 tournaments and 22 Grand Slam titles before retiring in 1999. She won the French Open six times.

Agassi's win at the Australian Open last month gave him his sixth Grand Slam title. His win last week in the Siebel Open gave him 56 tournament wins.

He and Graf married in October 2001 and have a 15-month-old son, Jaden Gil.

Agassi broke ground this week on an $US11 million ($A18.44 million) expansion of the Andre Agassi College Preparatory Academy, a Las Vegas charter school supported by his Andre Agassi Charitable Foundation.

He also announced a multiyear deal with Aramis and Designer Fragrances, a division of Estee Lauder, for a new fragrance to be introduced in September.

Aramis agreed to be the lead sponsor for the Grand Slam for Children, a benefit concert for Agassi's foundation slated for October in Las Vegas.

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