Complex sentence: In 1981, Real Shadai was a non winner in his two starts at age two but of his six races the following year, he won twice, the most important of which was the 1982Grand Prix de Deauville.
Split into simpler sentences: In 1981, Real Shadai was a non-winner in his two starts at age two. Out of his six races the following year, he won two, the most important of which was the 1982Grand Prix de Deauville.