Simplify the following text for a Grade 9 native English-speaking person.
Original: After Moore 's match with Ponzi , he was hired by Ponzi 's sometime employer , Sylvester Livingston , a pool impresario who hosted exhibitions with a stable of top pool talent including Irving Crane who , like Lassiter , would become a six-time world champion .
Simplified: After Moore 's match with Ponzi , he was hired by Ponzi 's employer , Sylvester Livingston . Livingston was a man who hosted exhibitions with a lot of top pool talent , including Irving Crane .