The format shifted back to eight-hand action for events 19 through 21. First tournament on the slate was a guaranteed $ 500,000 $ 10,300 buy-in no-limit hold’em event. Austrian Matthias Eibinger (pictured above, left) beat the field of a total of 70 entries, overcoming 16th champion Artur Martirosian who led to win $ 217,000. Two-time…