In the Merchants and Citizens Handicap, he carried 139 pounds to victory in August before a crowd of 25,000 including the Governors of New York and Pennsylvania. For these feats, he was called the great weight carrier, or the "Iron Horse." The fact that Discovery was retrospectively named Horse of the Year in 1935 is unusual as Omaha won the Triple Crown in that year.
In the Merchants and Citizens Handicap, he carried a heavy load (139 pounds) to victory in August before a large crowd (25,000 people), including the Governors of New York and Pennsylvania. This led to him being known as "the great weight carrier" or "the Iron Horse."  It's unusual that Discovery was named Horse of the Year in 1935 because Omaha won the Triple Crown that year.