FRANKEL, the unbeaten champion racehorse, begins his new £200 million career today – earning an impressive £6,250 per second.

The five-year-old stallion, born and trained in Newmarket by Sir Henry Cecil, retired in October last year after claiming 14 consecutive victories for owner Prince Khalid Abdullah – earning him the title of the best racehorse in history.

But now the superstar horse faces perhaps his greatest test yet.

Because today, on St Valentine’s Day, Frankel is entertaining his first mare at his pad just a few miles from Newmarket.

And despite his unproven libido, breeders from across the world are lining up to meet his £125,000 stud demands, which makes him the most valuable unproven commodity in breeding history.

Simon Mockridge, stud manager at Banstead Manor Stud where the champion horse now resides, said: “Frankel has settled in very quickly and showed us from the start that he is an ‘alpha male’.

“He is an intelligent horse with an active mind, and physically he looks really well in himself. Just as when he was a racehorse, his appetite is fantastic.

“Like the other stallions here, he will be very busy from this week until the end of June.”

Frankel could remain in breeding for the next 20 years if he remains healthy. Each meeting, called a covering, lasts 20 seconds, and Frankel is expected to breed three times a day and cover 130 mares each season.

Juddmonte Farms general manager Philip Mitchell said: “His book of mares is as one would hope and expect for ‘the best racehorse ever’.

“We are most grateful to all the breeders in Europe, America and Japan, who have put their faith in Frankel and as a result we have one of the most impressive books of mares that a first-season sire has received.”