Bred at Janów Podlaski stud, *Boryslaw was named Race Horse of the Year in Poland in 1990 and 1991 and was the winner of 3 stakes races including Produce, Sasanka, Embargo and second in the Derby. A successful sire as well, most notably of daughters including the significant Cirka of Bialka Stud, dam of Cirkus. He was chief sire at both Michalow, Kurozweki and Bialka State Studs.