Simplify the following text for a Grade 12 native English-speaking person.
Original: Its aging facilities , however , belie its success in training top Russian tennis players ; Yevgeny Kafelnikov , Marat Safin , Elena Dementieva , Dinara Safina , Anastasia Myskina , and Anna Kournikova are all graduates of Spartak .
Simplified: These include Yevgeny Kafelnikov , Marat Safin , Elena Dementieva , Dinara Safina , Anastasia Myskina , and Anna Kournikova are all graduates of Spartak .