It looks like legendary trainer D. Wayne Lukas, who won the GI Kentucky Oaks this year with Secret Oath (Arrogate), may have another star filly in the making in his barn. The Hall of Famer saddled well-bred juvenile filly Summer Promise (Uncle Mo) to an impressive debut win at Churchill Downs Saturday. Dispatched as the second choice at 3-1, the $500,000 KEESEP was away well from her rail draw and seized the early advantage as heavy favorite Key of Life (Mo Town) missed the break, trailing the field early. Summer...