Undefeated Australian mare Black Caviar and British star Frankel share the top weight of 130 pounds in the latest World Rankings.  The ratings are from December 1 through to May 23.

Frankel earned his rating with an ultra-impressive, six length runaway in the G1 English 2000 Guineas at Newmarket.

Former Australian star So You Think, now campaigned in Ireland, ranked third at 126 pounds on the basis of his victories in the G1 Tattersalls Gold Cup and G3 Mooresbridge Stakes at the Curragh.

The highest-rated American-based horses were Kentucky Derby winner Animal Kingdom and Preakness Stakes winner Shackleford.

130  Black Caviar (Aus)  by Bel Esprit
130  Frankel (GB)  King’s Best

126 So You Think (NZ)  High Chaparral

125  Canford Cliffs (Ire)  Tagula
125  Rocket Man (Aus)  Viscount

124  Dick Turpin (Ire)  Arakan

122  Hay List (Aus)  Statue of Liberty
122  J J The Jet Plane (SAf)  Jet Master
122  Planteur (Ire)  Danehill Dancer
122  Twice Over (GB)  Observatory
122  Victoire Pisa (Jpn)  Neo Universe
122  Worthadd (Ire)  Dubawi

121  Animal Kingdom (USA)  Leroidesanimaux
121  Monterosso (GB)  Dubawi
121  Rewilding (GB)  Tiger Hill
121  Sarafina (Fr)  Refuse To Bend
121  Shackleford (USA)  Forestry
121  St Nicholas Abbey (Ire)  Montjeu
121  Transcend (Jpn)  Wild Rush