Spassky lost a keenly fought match to Petrosian in Moscow, with three wins against Petrosian's four, with seventeen draws, though the last of his three victories came only in the twenty-third game, after Petrosian had ensured his retention of the title, the first outright match victory for a reigning champion since the latter of Alekhine's successful defences against Bogoljubov in 1934. Spassky's first event after the title match was the fourth Chigorin Memorial, where he finished tied for fifth with Anatoly Lein as Korchnoi won. Spassky then finished ahead of Petrosian and a super-class field at Santa Monica 1966 (the Piatigorsky Cup), with 11½/18, half a point ahead of Bobby Fischer, as he overcame the American grandmaster's challenge after Fischer had scored 3½/9 in the first cycle of the event. Spassky also won at Beverwijk 1967 with 11/15, one-half point ahead of Anatoly Lutikov, and shared first place at Sochi 1967 on 10/15 with Krogius, Alexander Zaitsev, Leonid Shamkovich, and Vladimir Simagin.