River Oaks International Tennis Tournament
|River Oaks International|
|Defunct tennis tournament|
|Tour||Grand Prix (1971)
Grand Prix (1978–1981)
|Location||River Oaks Country Club
|Surface||Clay / Outdoor|
The River Oaks International Tennis Tournament, also known as the River Oaks Invitational Tennis Tournament, was a men's tennis tournament held in early spring from 1931 until 2007 at the River Oaks Country Club, Houston, Texas, USA.  The tournament was the oldest in the country to still be played at its original site, in the original stadium. The tournament was founded by cotton broker Jack Norton. From the very beginning, the River Oaks International was an invitational amateur tournament, and was not associated with the professional tennis associations. From the start, the field was filled with a few stars and then local candidates filled out the rest of the field. The inaugural edition in April 1931, which made a loss of $1,500, was won by 19-year-old Ellsworth Vines. The tournament was not held during the World War II years 1942–1945.
In 1971 the tournament was part of the Grand Prix tennis circuit while from 1973 until 1977 it formed part of the World Championship Tennis circuit. One of the landmark tournament events was in 1974, the championship match was broadcast before a national audience; thirty-four-year-old Rod Laver, met the heir apparent, seventeen-year-old Björn Borg. Laver, who in 1961 became the first foreign player to win the singles title, won in straight sets and became the first man to hold four singles championships at River Oaks.
In 2008, the River Oaks International was merged with one of the oldest, and last remaining clay court tournaments in the United States, the U.S. Men's Clay Court Championships to continue the storied and tradition-filled tennis stadium at River Oaks.
- "River Oaks: Showcase Of Tennis". Sports Illustrated. April 20, 1959. pp. 22–26.
- Robertson, Max (1974). The Encyclopedia of Tennis. London: Allen & Unwin. p. 307. ISBN 9780047960420.
- Dale Robertson (April 4, 2004). "River Oaks stages 70th edition of quaint event that boasts legend-filled history". www.chron.com. Houston Chronicle.
- "River Oaks Tennis Title Won by Vines". Pittsburgh Post-Gazette. Apr 13, 1931.
- Dale Robertson (April 7, 2012). "On tennis: Players love center court at River Oaks". The Houston Chronicle.
- "River Oaks Tennis To Have New Look". Schenectady Gazette. Apr 2, 1973.
- "Laver Snaps River Oaks Tennis Jinx". The Pittsburgh Press. Apr 17, 1961.
- "U.S. Men's Clay Court Championships". www.mensclaycourt.com. ROCC.
- "River Oaks tennis tourney finds way to endure". The Houston Chronicle. April 5, 2009.