[4] At odds of 50–1, Giacomo stands as tied, with Mine That Bird in 2009, for the fourth-biggest longshot ever to win the Derby, trailing only Country House (horse), at 65–1 in 2019, Rich Strike at 80-1 in 2022, and Donerail, who went off at 91–1 in 1913.

[5] Giacomo's owner received a first-place check of $1,639,600 for the victory, the largest in Kentucky Derby history at the time, later surpassed in 2019 when the purse was increased to $3 million.

He finished seventh in the 2005 Belmont Stakes, again behind the favored Afleet Alex; Smith said after the race that the horse had breathing problems.

The victory was followed by a 5th in the Pacific Classic Stakes and a show in the Goodwood Breeders' Cup Handicap, where Giacomo lost to Lava Man for the 3rd time in 4 races.

Despite the fact that Giacomo had only won two stakes races, he was entered in the 2006 Breeders' Cup Classic field, where he faced Lava Man as well as other top horses such as Bernardini and the eventual winner, Invasor.