Youth and online skills dominated as the WSOP final table in 2013, but it was an experienced grinder who carried the day. As Monday night bled into Tuesday morning, the most veteran player of the final 10 gamblers competing for a seat at the nine-person final table worth $8.4 million for the winner was defeated by the second-most respected player. Deep into the 14th hour of play on the seventh day of the world’s biggest no-limit Texas Hold ‘em competition, well-known Sacramento, Calif., grinder J.C. Tran went head to head with Carlos Mortensen, a Spanish pro known as “El Matador,”…