Big River ran some respectable races at Grade 3 level just last year, over distances ranging from 23.5f-27.5f, however was subsequently stepped up to 4 mile distances over which he was to lesser effect.
Aintree can be very testing for a horse, its a long way from the home turn to the line meaning you need a horse with stamina; it's also a positive that Big River has plenty in the tank to compete over the longer trips, despite his lesser form.
It's now though, a big plus to see him returned to the 25f distance, and on the back of 189 day break, he is expected to relish the good ground conditions which he boasts 40% strike rate upon.
Interestingly, Big River has been given a wind operation during that time off the track; connections have clearly felt that they can still get plenty more wins out of this runner and its a positive signal for a now 11yo competitor.
Progeny of Big River's sire, Milan, actually boast a 30% strike rate first time back after a wind operation and if stripping fit, Big River has real potential to run a big race here.