Hartford Courant, Hartford, Connecticut, Sunday, September 07, 1958
Interzonal Tournament; Chess by G. E. Avery
After 15 rounds of the tournament being played at Portoroz, Petrosian has increased his lead to 10½ points. Tal is still in second place, Bobby Fischer's score is now 7½-5½. James Sherwin stands 5½-7½. There are 21 players taking part in the tourney.