Te Akau trainer Mark Walker made history at Ballarat on Sunday with an unprecedented trifecta in the A$400,000 Ecycle Solutions Grand National Steeplechase (4500m). Walker saddled Leaderboard (Street Cry) for a 25-length win in the showpiece steeplechase, with The Mighty Spar (NZ) (Savabeel) second and Prismatic (NZ) (Savabeel) third. It capped an enormously special Sunday for Walker and the Te Akau Racing team, who also took three runners to Taupo and came away with three winners – Carsolio, To Bravery Born and In Haste. Former Gr.3 Wellington Cup (3200m) and…