Question: Sydney Mervin "Merv" Batt was a frequent opponent for many foreign wrestlers travelling overseas including NWA World Heavyweight Champions such as one who was called, "probably the greatest champion of the 20th century." by who?

<P0-S0> The WWC Universal Heavyweight Championship is a professional wrestling world heavyweight championship and the top title contested for in the Puerto Rican professional wrestling promotion, the World Wrestling Council. <P0-S1>  The championship was established in July 1982, as the WWC World Heavyweight Championship, when the company was named Capitol Sports Promotions. <P0-S2>  The championship received its current name following a match between Carlos Colón (WWC World Heavyweight Champion) and Ric Flair (NWA World Heavyweight Champion) where the "Champion of the Universe" was supposed to be determined. <P0-S3>  The first champion was Abdullah the Butcher, who was billed as champion upon the title's creation. <P0-S4>  Since being established, the WWC Universal Heavyweight Championship has been held by forty-nine different wrestlers and has also been held up on nineteen occasions and vacated or stripped thirteen times. <SEP> <P1-S0> Abe Jacobs (born 1938) is a retired New Zealand professional wrestler. <P1-S1>  He was one of the first men to follow fellow New Zealander Pat O'Connor to the United States where, like O'Connor, Jacobs became a major star in the National Wrestling Alliance during the "Golden Age of Wrestling". <P1-S2>  One of the most recognisable "babyfaces" during this period, he was billed as the "Jewish Heavyweight Champion" and wrestled in a number of high-profile matches with many stars of the era including numerous bouts against NWA World Heavyweight Champions Lou Thesz, Gene Kiniski, Buddy Rogers, Dick Hutton and Pat O'Connor. <P1-S3>  His bout against O'Connor in 1961, which aired on Capitol Wrestling's weekly television show, was the first time two New Zealanders wrestled for a championship title on foreign soil. <SEP> <P2-S0>  He performed for various territories of the National Wrestling Alliance (NWA), becoming a two-time NWA World Heavyweight Champion, and multi-time NWA Tag Team Champion with his brother Gerald Brisco. <P2-S1>  Brisco is considered one of the top wrestlers of his era; in 2005, Don Leo Jonathan called him "probably the greatest champion of the 20th century." <P2-S2> Freddie Joe "Jack" Brisco (September 21, 1941 – February 1, 2010) was an American professional wrestler. <SEP> <P3-S0>  As a wrestler, he travelled throughout the world during the 1960s and '70s, often visiting countries where professional wrestling was unknown such as southeast Asia, and was one of the top competitors to come from New Zealand during that era. <P3-S1>  Rickard was a frequent opponent for many foreign wrestlers travelling overseas including NWA World Heavyweight Champions such as Jack Brisco, Dory Funk, Jr., Harley Race and "The Nature Boy" Ric Flair. <P3-S2> Sydney Mervin "Merv" Batt (3 September 1929 – 5 April 2015), best known by his ring name Steve Rickard, was a New Zealand professional wrestler, trainer and promoter. <P3-S3>  He also had high-profile matches with Karl Gotch, Killer Kowalski, The Destroyer, André the Giant, Abe Jacobs and King Kong as well.