Biondetti is the only group or grade one winning two-year-old son of A.P. Indy's Champion and outstanding sire son, Bernardini. Out of graded stakes winner, Lyphard's Delta, he is three-quarters brother to graded winner Indy Five Hundred, and to Delta Princess, a multiple graded winner who is also dam of three-time Eclipse Award winner Royal Delta.
Biondetti's dam is by Northern Dancer's great stallion son, Lyphard, and Biondetti should do well when crossed back over Northern Dancer line mares. Bernardani has sired grade one winners To Honor and Serve and Angela Renee out of mares by Northern Dancer grandson, Deputy Minister, and he also has a stakes winner out of a mare by Deputy Minister son, Dehere. The Deputy Minister strain might also be introduced through Silver Deputy, Awesome Again (sire of Ghostzapper and Awesome of Course), Touch Gold, Salt Lake, French Deputy and Forest Camp. Bernardini is also showing a distinct affinity for the Storm Bird branch of Northern Dancer. His Travers Stakes (gr. I) winner, Stay Thirsty, is out of a mare by Storm Bird himself, and his graded winners Theyskens' Theory and Buffum are respectively from mares by Storm Bird sons Summer Squall (a half-brother to A.P. Indy) and Storm Cat. Considering sons of Storm Cat, Bernardini has a graded stakes winner out of a mare by Tale of the Cat and stakes winners from daughters of Forestry and Exploit, and other Storm Cat sons to provide the dams of A.P. Indy stakes winners include Bernstein, Cat Thief, Catienus, Forest Wildcat, Giant's Causeway and his brother Freud, Hennessy (sire of Johannesburg and Henny Hughes, and grandsire of Scat Daddy), Menifee (by Harlan, sire of Harlan's Holiday), Sir Cat and Storm Boot, and it could also be worth trying Stormy Atlantic and Stormin Fever, who are both out of mares by A.P. Indy's grandsire, Seattle Slew.
Bernardini's second Travers Stakes winner (gr.I), Alpha, is out of a mare descending from the Northern Dancer through Nijinsky II (sire of Royal Academy, Sky Classic and Shadeed, and grandsire of Strawberry Road and Alydeed). From other branches of the Northern Dancer line, Bernardini has a stakes winner out of a mare by Galileo (by Sadler's Wells, who would also be attractive through El Prado and his sons Medaglia d'Oro, Kitten's Joy and Artie Schiller); and a grade one winner out of a mare by Danehill, a son of Danzig, a strain that could also be introduced through Chief's Crown, Boundary, Dayjur, Danzig Connection, Belong to Me, Langfuhr, Hard Spun, War Front, War Chant, Honor Grades (a half-brother to A.P. Indy), Exchange Rate and Lost Soldier. It would also be interesting to try mares descending from Dixieland Band, who is bred on the same cross as the dam of the mare, and who could be brought in through Dixie Union (sire of High Cotton), Citidancer (sire of Disco Rico), Bowman's Band, Dixie Brass and Dixieland Brass.
Northern Dancer Is a three-quarters relative to Icecapade, and from that branch of the Nearctic line, Bernardini is sire of graded stakes winner Le Bernardin out of a mare by Wild Again, and graded stakes winner Imperative out of a mare by Caller I.D. from the Phone Trick/Clever Trick branch of Icecapade.
Bernardini has also enjoyed an extremely profitable relationship with mares from the Mr. Prospector line. From daughters of Carson City, he is sire of four stakes winners, including the grade one winning A Z Warrior, and the very talented graded two scorer Wilburn, and this strain can be brought in through City Zip, Lord Carson, Cuvee, Five Star Day, Flying Chevron, Good and Tough, Hear No Evil and Pollard's Vision. Bernardini is sire of grade two winner Gamilati out of a mare by Kingmambo (sire of Lemon Drop Kid, who would give inbreeding to A.P. Indy and a three-parts-sister), and his stakes winning and grade one placed daughter R Gypsy Gold is out of a mare by Seeking the Gold (sire of Petionville, Mutakddim, and Cape Town). Bernardini is out of a mare by Quiet American, a son of Fappiano, but it could be worth duplicating this strain via Rubiano, Unbridled, Unbridled's Song, Cryptoclearance (broodmare sire of a Bernardini's undefeated graded stakes winner Algorithms, and sire of Victory Gallop, and grandsire of Candy Ride), Broken Vow, Empire Maker, Grindstone and Birdstone. There are also a Bernardini stakes winners out of mares by Gone West (sire of Mr. Greeley, Elusive Quality, Grand Slam, Speightstown and Proud Citizen), Woodman and Smart Strike. It would also be worth considering introducing the Mr. Prospector strain through Machiavellian (sire of Street Cry), Forty Niner (particularly Distorted Humor), Afleet (sire of Northern Afleet, grandsire of Afleet Alex), Fusaichi Pegasus and Silver Ghost. There are also four grade one winners by A.P. Indy and his sons out of mares from the male line of Alydar, a genetic relative to Mr. Prospector, who could be brought in through Saratoga Six, Turkoman, Criminal Type, Alysheba, Easy Goer, Jeblar and Strike the Gold.