Question: Are Rod Laver and Mary-Ann Eisel both nationals of the same country ?

Context paragraphs:
1962 U.S. National Championships – Men's Singles: Rod Laver defeated Roy Emerson 6–2, 6–4, 5–7, 6–4 in the final to win the Men's Singles tennis title at the 1962 U.S. National Championships.  Laver would not appear in a grand slam tournament again until the start of the open era in 1968, due to turning professional in 1963.

Emerson–Laver rivalry: Australian tennis player Rod Laver had a long rivalry with his fellow Queenslander Roy Emerson.  They met first on the senior amateur tour in 1958 and dominated the amateur circuit until 1962, before Laver went pro.  When open tennis arrived in 1968, Emerson went pro, and had many new battles with Laver.

1962 Australian Championships: The 1962 Australian Championships was a tennis tournament that took place on outdoor Grass courts at the White City Tennis Club, Sydney, Australia from 5 January to 15 January.  It was the 50th edition of the Australian Championships (now known as the Australian Open), the 14th held in Sydney, and the first Grand Slam tournament of the year.  The singles titles were taken by Rod Laver and Margaret Smith.  Laver's win was the first step towards his first Grand Slam.

Mary-Ann Eisel: Mary–Ann Eisel (born November 25, 1946) is an American former tennis player.  She was the US Open mixed doubles champion in 1968.

Laver Cup: The tournament is named after Australian tennis legend Rod Laver, a tennis player widely regarded as one of the greatest in the history of the sport.  Roger Federer's management company, TEAM8, Brazilian businessman and former Davis Cup player Jorge Paulo Lemann, and Tennis Australia partnered to create the Laver Cup.

1974 Volvo International – Doubles: Rod Laver and Fred Stolle were the defending champions but only Laver competed that year with Jeff Borowiak.

Rod Laver (band): Rod Laver (stylized . rod laver) was a Christian rapcore group from originating from Los Angeles.  Their sound was similar to that of Korn, Limp Bizkit, or Kid Rock, but as the personnel lineup changed the group wavered from a rock-grounded sound to one based in hip hop, then back again.

Rod Laver: Rodney George Laver {'1': ", '2': ", '3': ", '4': "} (born 9 August 1938) is an Australian former tennis player widely regarded as one of the greatest in the history of the sport.  He was the No. 1 ranked professional from 1964 to 1970, spanning four years before and three years after the start of the Open Era in 1968.  He also was the No. 1 ranked amateur in 1961–62.

1970 Pepsi-Cola Masters – Singles: Stan Smith won the round robin by virtue of having defeated runner-up Rod Laver, although both Smith and Laver had achieved the same number of wins.

Rod Laver career statistics: This is a list of the main career statistics of Australian former tennis player Rod Laver whose playing career ran from 1956 until 1977.  He played as an amateur from 1956 until the end of 1962 when he joined Jack Kramer's professional circuit.  As a professional he was banned from playing the Grand Slam tournaments as well as other tournaments organized by the national associations of the International Lawn Tennis Federation (ILTF).  In 1968, with the advent of the Open Era, the distinction between amateurs and professionals disappeared and Laver was again able to compete in most Grand Slam events until the end of his career in 1977.  During his career he won eleven Grand Slam, nine Pro Slams and five Davis Cup titles.

Supporting paragraphs: Rod Laver Mary-Ann Eisel
Answer: no