Best still to come from Mac - Fallon

Kieren Fallon expects Macarthur to come into his own next year if the Coolmore operation opt to keep the well-bred colt in training as a four-year-old.

The full-brother to 2005 Epsom Derby hero Motivator endured a luckless run under Christophe Soumillon in the Ladbrokes St Leger at Doncaster, where he would almost certainly have gone much closer than sixth with a clear passage.