▁abbre vi ations ▁are ▁used : ▁ ▁C ▁– ▁Col t ▁– ▁Ung eld ed ▁male ▁horse ▁up ▁to ▁four - year s - old . ▁ ▁F ▁– ▁Fil ly ▁– ▁Fem ale ▁horse ▁up ▁to ▁four - year s - old . ▁ ▁H ▁– ▁Hor se ▁– ▁Ung eld ed ▁male ▁horse ▁over ▁four - year s - old . ▁ ▁M ▁– ▁Mare ▁– ▁Fem ale ▁horse ▁over ▁four - year s - old . ▁ ▁G ▁– ▁G eld ing ▁– ▁G eld ed ▁male ▁horse ▁of ▁any ▁age . ▁ ▁C ertain ▁horses ▁may ▁have ▁also ▁recorded ▁a ▁less er ▁rating ▁over ▁a ▁distance ▁different ▁from ▁that ▁listed ▁above . ▁The ▁IF HA ▁publish es ▁this ▁information ▁when ▁the ▁lower ▁rating ▁represents ▁the ▁overall ▁top ▁performance ▁in ▁a ▁particular ▁category . ▁There ▁was ▁one ▁such ▁additional ▁rating ▁for ▁this ▁season : ▁ ▁Top ▁ranked ▁horses ▁The ▁tables ▁below ▁show ▁the ▁top ▁ranked ▁horses ▁overall , ▁the ▁top ▁fill ies ▁and ▁mar es , ▁and ▁the ▁top ▁three - year - olds ▁in ▁the ▁ 2 0 0 4 – 0 5 ▁Rank ings . ▁They ▁also ▁show ▁the ▁top ▁perform ers ▁in ▁various ▁sub div isions ▁of ▁each ▁group , ▁which ▁are ▁defined ▁by ▁the ▁distances ▁of ▁races , ▁and ▁the ▁surfaces ▁on ▁which ▁they ▁are ▁run . ▁Top ▁ranked ▁horses ▁r ated ▁less ▁than ▁ 1 1 5 ▁are ▁included ▁where ▁known . ▁The ▁IF HA ▁recogn izes ▁five ▁distance ▁categories ▁— ▁S print , ▁M