 In his final year, 1988, he ended a previously unbeaten season with an unlucky, fast closing neck second to Tony Bin in the Arc.Jockey Michael Roberts was blamed by many for poor positioning in this final race, Mtoto rounding the home turn into a short straight behind a wall of horses, in one of the largest Arc fields ever assembled.Mtoto stood at Aston Upthorpe Stud at a fee of £18,000, where he sired Shaamit, Celeric, Serious Attitude and many other horses including Presenting, Arbatax and Maylane.