Question: Who won the singles title at a 1973 tennis tournament held at a Los Angeles arena designed by architect Charles Luckman?

Context paragraphs:
1973 Pacific Southwest Open: The 1973 Pacific Southwest Open was a men's tennis tournament played on outdoor hard courts at the Los Angeles Tennis Center in Los Angeles, California in the United States.  The tournament was classified as Grade A and was part of the Grand Prix tennis circuit.  It was the 47th edition of the tournament and ran from September 17 through September 23, 1973.  Jimmy Connors won the singles title and the $11,000 first place prize money.

1995 Infiniti Open: The 1995 Infiniti Open was a men's tennis tournament held at the Los Angeles Tennis Center in Los Angeles, California, United States.  The tournament was played on hard court and was held from July 31 through August 7.  Second-seeded Michael Stich won the singles title.

1969 Pacific Southwest Open: The 1969 Pacific Southwest Open was a combined men's and women's tennis tournament played on outdoor hard courts at the Los Angeles Tennis Center in Los Angeles, California in the United States.  The men's tournament was part of the Grand Prix tennis circuit.  It was the 43rd edition of the tournament, the second in the open era, and ran from September 22 through September 28, 1969.  Pancho Gonzales, aged 41, won the men's singles title, 20 years after winning it for the first time, and collected $4,000 first-prize money while Billie Jean King earned $1,500 for her singles title.

1974 Rothmans International Tennis Tournament: The 1974 Rothmans International Tennis Tournament was a men's professional tennis tournament held on indoor carpet courts in the Royal Albert Hall in London, England.  It was the fourth edition of the tournament and was held from 15–23 February 1974.  The event was part of the 1974 World Championship Tennis circuit.  Sixth-seeded Björn Borg won the singles title.

1973 British Motor Cars of Los Angeles: The 1973 British Motor Cars of Los Angeles was a women's tennis tournament played on indoor carpet courts at the The Forum in Los Angeles, California in the United States that was part of the 1973 Virginia Slims World Championship Series.  The event had previously been held in Long Beach.  It was the third edition of the tournament and was held from January 23 through January 27, 1973.  The final was watched by 2,693 spectators who saw first-seeded Margaret Court win the singles title and earn $6,000 first-prize money.

Los Angeles Open (tennis): The Los Angeles Open was a former tennis tournament held in Los Angeles, United States from 1927 until 2012.  It included a women’s draw until 1974 when Linda Lewis won the last ladies title.  Subsequently it became a men only event and integrated into the ATP's professional tennis circuit.  The inaugural edition of the event, known as the Pacific Southwest Championships, was organized by Perry T. Jones and held at the Los Angeles Tennis Club (LATC) in October 1927 and Bill Tilden and Kea Bouman were the first singles champions.  The tournament quickly became a prestigious event on the tennis calendar.

The Forum (Inglewood, California): The Forum is a multi-purpose indoor arena in Inglewood, California, adjacent to Los Angeles.  Located between West Manchester Boulevard, across Pincay Drive and Kareem Court, it is north of the under-construction Los Angeles Stadium at Hollywood Park and the new Hollywood Park Casino.  It is about three miles east of Los Angeles International Airport.  Opening on December 30, 1967, the Forum was an unusual and groundbreaking structure.  Architect Charles Luckman's vision was brought to life by engineers Carl Johnson and Svend Nielsen, who were able to engineer the structure so that it had no major support pillars.  This had previously been unheard of in an indoor arena the size of the Forum.

1972 Rothmans International Tennis Tournament: The 1972 Rothmans International Tennis Tournament was a men's professional tennis tournament held on indoor carpet courts in the Royal Albert Hall in London, England.  It was the third edition of the tournament and was held from 18–22 January 1972.  It was a non-tour event, i.e. not part of either the 1972 Grand Prix or 1972 World Championship Tennis circuit.  Cliff Richey won the singles title and $6,960 in prize money after defeating Clark Graebner in a three-hour-and-six-minute final.

1971 Rothmans International Tennis Tournament: The 1971 Rothmans International Tennis Tournament was a men's professional tennis tournament held on indoor carpet courts in the Royal Albert Hall in London, England.  It was the second edition of the tournament and was held from 28 February through 4 March 1971.  It was an independent event, i.e. not part of either the 1971Grand Prix or 1971 World Championship Tennis circuit.  Rod Laver won the singles title.

1973 Rothmans International Tennis Tournament: The 1973 Rothmans International Tennis Tournament was a men's professional tennis tournament held on indoor carpet courts in the Royal Albert Hall in London, England.  It was the third edition of the tournament and was held from 18-27 January 1973.  The event was part of the 1973 World Championship Tennis circuit.  Brian Fairlie won the singles title.

Supporting paragraphs: 1973 British Motor Cars of Los Angeles The Forum (Inglewood, California)
Answer: Margaret Court