As a 3-year old, Kantje's Ronaldo won the stallion performance test scoring 9s for jumping, rideability and character. He competed at Z2 level in show jumping. His career was restricted to breeding from 8 years old and he stood at the French State Stud between 2001 and 2004. Ronaldo produced 11 licensed sound and was proclaimed Best New Forest Pony Stallion of the past 50 years in The Netherlands. Ronaldo was gelded in 2007 due to an infection. December 2011 two Dutch New Forest foals were diagnosed with myotonia. It was noted both foals were by a stallion descendant of Kantje’s Ronaldo, and that this stallion also occurred in the dam lines.

Was humanely put down 2008 at 21 years old.

1990 Voor het eerst goedgekeurd NNFPS
1996 Dagkampioen NNFPS CHK
1998 Reserve dagkampioen NNFPS CHK
1999 Preferent
1999 Prestatie dekhengst
1999 Prestatie fokhengst
1999 Dagkampioen NNFPS CHK