Complex sentence: The gelding has won 11 of those starts, placed in 13, and come in third six times which means he's been in the money in thirty of his races, or for approximately 75 percent of those starts.
Split into simpler sentences: The gelding has won 11 of those starts, placed in 13, and come in third six times. This means he's been in the money in thirty of his races, or for approximately 75 percent of those starts.