Yu-Gi-Oh! Championship Series Philadelphia 2012 was a Yu-Gi-Oh! Championship Series tournament held at the Pennsylvania Convention Center in Philadelphia from May 19 to 20, 2012. It was won by Feng Chen.
After eleven rounds of Swiss, the tournament switched to single elimination, in which 32 of the highest scoring players took part.
In the top 16, Oliver Tomajko defeated Tyler Tabman, Serge Poinsette defeated Christopher Flores, Feng Chen defeated Matthew O'Neill, George Kyan defeated Merlin Schumacher, Jamal Niles defeated Shane Scurry, Andrew Martin defeated James Hickey-Neumann, Joseph Giorlando defeated Joseph Chang and Jerry Williams defeated Andrew Linou.
In the quarter finals, Serge Poinsette defeated Oliver Tomajko, Feng Chen defeated George Kyan, Andrew Martin defeated Jamal Niles and Joseph Giorlando defeated Jerry Williams.
In the semi finals, Feng Chen defeated Serge Poinsette and Andrew Martin defeated Joseph Giorlando.
In the finals Feng Chen defeated Andrew Martin.
The first Dragon Duel tournament was won by Cole Agan, who used a "Chaos Dragon" Deck. The runner-up was Benjamin Leverett, who used a "Dino Rabbit" Deck. The second Dragon Duel tournament was won by Zachary Leverett, who used a "Dino Rabbit" Deck. The runner-up was Fisher Orlando, who used a "Gravekeeper's" Deck.
The prizes for the side events were as follows. Four of the players who accumulated the most points took part in one set of public event playoffs. Another four randomly selected players took part in another set of pubic event playoffs.
In the top sixteen, Oliver Tomajko, Serge Poinsette, Christopher Flores, Jamal Niles, Shane Scurry, James Hickey-Neumann, Joseph Giorlando and Jerry Williams used "Dino Rabbit" Decks, Matthew O'Neill, Feng Chen, George Kyan and Andrew Martin used "Chaos Dragon" Decks, Joseph Chang used an "Inzektor" Deck, Merlin Schumacher used a "Dark World" Deck, Andrew Linou usde a "Wind-Up" Deck and Tyler Tabman used a "Final Countdown" Deck.