Possible Clues:

• … exponent of 11 28, cooking chop and fish outside
• Prizewinning tragedian confuses chess with polo
• Ancient author of some complex plays?
• Greek philosopher
• Serious writer's concession: a little comedy in the gaps
• Dramatist chooses LP in new compilation
• Dramatist's second work — this classical reading son ignored
• Athenian tragedian who wrote Antigone and Electra
• ''Oedipus Rex'' dramatist
• Greek dramatist, author of Oedipus Rex