 Complete the following phrase:  The winner of the Main Event has traditionally been given the unofficial title of World Champion. However, some believe that no-limit hold em is not the optimal structure for determining a champion poker player. In 2002, Daniel Negreanu argued that the Main Event should switch to pot-limit hold em, believing that pot-limit required a more complete set of poker skills than no-limit, although he admitted that such a change would likely never be made. However, after the 50,000 H.O.R.S.E.Poker Players Championship event was added, many of the games top professionals, including Negreanu, have since stated that this tournament ultimately decides the worlds best player. The 50,000 buy-in, being five times larger than the buy-in for the Main Event, has thus far tended to deter amateurs from playing in this event, and the variety of games played require a broader knowledge of poker. The first 50,000 event, conducted as a H.O.R.S.E. tournament, was won by Chip Reese in 2006. In 