Career
Saensak lost his world title in his second defense against Miguel Velasquez after being disqualified in the 5th round, but quickly regained it four months later on October 29, 1976, by knocking out Velasquez in two rounds. He was knocked out by Sang Hyun Kim in the 13th round to lose his world title on December 30, 1978. He fell into relative obscurity from then on, losing both of his fights in 1979, one of which was a third-round knockout loss to Thomas Hearns.
His last professional fight was for the OPBF welterweight title, which he lost by decision over 12 rounds.
His record was 14–6–0 (11 KOs). In 2014 Vasyl Lomachenko equaled the record of winning a world title in his third bout.
Saensak still has the record for the fastest time though, having taken 11 days less than the Ukrainian. Saensak was admitted to Rajvithi Hospital on April 12, 2009 for liver failure and intestinal blockage.
Surgery failed to improve his condition, which was complicated by Saensak being afflicted by various ailments.
On April 16, Saensak died while under observation in an intensive care unit