[2] In 1986 Mack Lobell won the Breeders Crown, set world records at Delaware and Lexington and finished second in the Peter Haughton Memorial.
In the second heat Mack Lobell was defeated by Napoletano after setting a slow pace therefore failing to become the first trotter since 1972 to win the Triple Crown.
[8] Toward the end of the season Mack Lobell won the Breeders Crown at Pompano Park by 12 3/4 lengths from Napoletano in a time of 1.54 4/5 shattering the previous world record for a 5/8 mile track of 1.57.
In the International Trot he beat opponents from six countries and set a Yonkers track record for the 1 1/4 mile distance in becoming the first American winner of the race since 1980.
[13] His 17 wins from 19 starts were sufficient for him to be named Harness Horse of the Year[14] Early on, Mack Lobell was managed by Chuck Sylvester, and almost always had John Campbell as his driver, but after his performances in Europe at the age of four he was sold to Swedish trainer and breeder John-Eric Magnusson for a reported $6m.
In 1989 Mack Lobell raced mainly in Europe with wins in the Hugo Abergs Memorial in Sweden, the Campionato Europeo in Italy, the GP von Bild in Germany and the Momarken Grand Prix in Norway.