Conversation so far:
When did Graf start Steffi Graf's post career exhibition matches?
In late 1999 and early 2000, as part of her Farewell Tour.
Who did Graf play for in her exhibition matches?
She played Jelena Dokic in Christchurch, New Zealand, Amanda Coetzer in Durban, South Africa, and her former rival Arantxa Sanchez Vicario in Zaragoza, Spain.
Did she perform well?
In February 2000, Graf played against Kimiko Date at Nagoya Rainbow Hall in Tokyo, winning in three sets.
Did she play for charity during her exhibition career?
Proceeds from her match against Sabatini went to Graf's foundation, "Children for Tomorrow".
Did Graf play in the United States at all?
In 2010, Graf participated in the WTT Smash Hits exhibition in Washington, D.C.
to support the Elton John AIDS Foundation.
When did sha play her last exhibition?
In 2010.
What else did she do besides play tennis?
CANNOTANSWER.
What is something that stands out about her exhibition career?
Graf played a singles exhibition match against Kim Clijsters and a mixed doubles exhibition alongside husband Andre Agassi.

Question: Did she ever play with any other tennin superstars?
Self-contained rewrite: Did Steffi Graf ever play with any other tennis superstars, besides Kim Clijsters?