The first reported foal by grade I winner Street Boss   is a filly out of the winning King of Kings mare Top Tier. The newborn, owned by Barry Butzer, was foaled Jan. 26 at her owner’s Sun Valley Farm near Versailles, Ky.

Top Tier is a half-sister to stakes winners Dootsie and Sand Ridge.

Street Boss, who won the 2008 Bing Crosby (gr. I) and Triple Bend Invitational (gr. I) Handicaps, stands alongside his sire, Street Cry, at Sheikh Mohammed’s Darley near Lexington. Street Boss is out of the Ogygian mare Blushing Ogygian. His 2010 fee is $20,000.