Grandmaster Varuzhan Akobian (U.S.) tops the 2012 Philadelphia Open chess tournament standings, with 5.5 points after 7 rounds.
GMs Serge Erenburg (Israel), Jon Hammer (Norway) and Sam Shankland (U.S.) are behind Akobian on tie-break with same results.
Another Armenian grandmaster, Vigen Mirumian representing Czech Republic at the open tournament in Norderstedt, Germany, gained 4 points in 5 rounds, being only 0.5 point behind leaders.
