Japan's Daiya Seto won his third career 400 individual world championship on Saturday, and earning his second spot in next summer's Olympics in Tokyo.The victory in 4 minutes, 8.95 seconds over American Jay Litherland follows his gold here in the 200 IM, an event he had never medaled in before at the worlds. His fourth career world championship gives Seto one more than Japan's Olympic hero Kosuke Kitajima.Seto set a blistering pace through the first three quarters of the race, entering the freestyle with a lead of over two lengths. But Litherland almost caught him at the end, finishing just…READ FULL ARTICLE