Ushba Tesoro is now the highest-earning Japanese racehorse after finishing second in the G1 Dubai World Cup and surpassing Equinox. Ushba Tesoro is a son of Orfevre out of Millefeui Attach, by King Kamehameha. After converting to dirt racing, he won four G1s and finished second in the G1 Saudi Cup. His earnings in the past two years amount to 2,215,670,700 JPY.

Here is the list of the top 10 highest-earning Japanese racehorses:
1st Ushba Tesoro 2,215,670,700 JPY
2nd Equinox 2,215,446,100 JPY
3rd Almond Eye 1,915,263,900 JPY
4th Kitasan Black 1,876,843,000 JPY
5th Panthalassa 1,844,663,200 JPY
6th T.M.Opera O 1,835.189,000 JPY
7th Gentildonna 1,726,030,400 JPY
8th Orfevre 1,576,213,000 JPY
9th Buena Vista 1,478,869,700 JPY
10th Deep Impact 1,454,551,000 JPY