Possible Clues:

• Singer Dee
• Dee who sang with Elton
• 54-Across that sounds like two door openers
• Elton's "Don't Go Breaking My Heart" duet partner
• Vandeweghe of the N.B.A.
• Two-time NBA all-star Vandeweghe
• Baseball Hall of Famer Cuyler
• Former NBA forward Vandeweghe
• Singer __ Dee
• With 61-Down, Elton John duet partner