Possible Clues:

• Supreme leaders
• Rulers' rulers
• Chaps at the very top ruling cricket?
• Superior types with balls -- and where they might be seen
• Many a superior spell of cricket ... and where they may be seen
• Supreme rulers finished on cricket ground
• Whence Father Time surveys chieftains
• Part of test and its possible location for top men
• Supremos in the MCC?
• Masters several balls bowled at cricket ground