Complex sentence: Churio won the Argentine Open in three decades: 1926,1934 and 1943, and was second in six times: 1928,1929,1932,1935,1936 and 1937.
Split into simpler sentences: Churio won the Argentine Open in three decades, in 1926,1934 and 1943. He also finished runner-up on six occasions, in 1928,1929,1932,1935,1936 and 1937.