Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Tournament | Date | Surface | Round | Opponent |
| --- | --- | --- | --- | --- |
| U.S. Indoor Championships | Feb 20–26 | Carpet | 1st Round | Nancy Yeargin |
| U.S. Indoor Championships | Feb 20–26 | Carpet | 2nd Round | Virginia Wade |
| U.S. Indoor Championships | Feb 20–26 | Carpet | Quarterfinal | Pam Casale |
| U.S. Indoor Championships | Feb 20–26 | Carpet | Semifinal | Marcella Mesker |
| U.S. Indoor Championships | Feb 20–26 | Carpet | Final | Chris Evert |
| Virginia Slims Championships | Feb 28 – Mar 4 | Carpet | 1st Round | Virginia Ruzici |
| Virginia Slims Championships | Feb 28 – Mar 4 | Carpet | 2nd Round | Carling Bassett |
| Virginia Slims Championships | Feb 28 – Mar 4 | Carpet | Semifinal | Pam Shriver |
| Virginia Slims Championships | Feb 28 – Mar 4 | Carpet | Final | Chris Evert |
| Lipton WTA Championships | April 16–22 | Clay | 1st Round | Not Played |
| Lipton WTA Championships | April 16–22 | Clay | 2nd Round | Kimberly Shaefer |
| Lipton WTA Championships | April 16–22 | Clay | 3rd Round | Mima Jaušovec |
| Lipton WTA Championships | April 16–22 | Clay | Quarterfinal | Catherine Tanvier |
| Lipton WTA Championships | April 16–22 | Clay | Semifinal | Hana Mandlíková |
| Lipton WTA Championships | April 16–22 | Clay | Final | Chris Evert |
| United Airlines Tournament of Champions | April 23–29 | Clay | 1st Round | Not Played |
| United Airlines Tournament of Champions | April 23–29 | Clay | 2nd Round | Kimberly Shaefer |
| United Airlines Tournament of Champions | April 23–29 | Clay | Quarterfinal | Kathy Horvath |
| United Airlines Tournament of Champions | April 23–29 | Clay | Semifinal | Bonnie Gadusek |
| United Airlines Tournament of Champions | April 23–29 | Clay | Final | Laura Arraya |
| French Open | May 28 – June 10 | Clay | 1st Round | Nathalie Tauziat |
| French Open | May 28 – June 10 | Clay | 2nd Round | Marcella Mesker |
| French Open | May 28 – June 10 | Clay | 3rd Round | Maria-Christine Calleja |
| French Open | May 28 – June 10 | Clay | 4th Round | Claudia Kohde-Kilsch |
| French Open | May 28 – June 10 | Clay | Quarterfinal | Kathy Horvath |
| French Open | May 28 – June 10 | Clay | Semifinal | Hana Mandlíková |
| French Open | May 28 – June 10 | Clay | Final | Chris Evert-Lloyd |
| Eastbourne International | June 18–23 | Grass | 1st Round | Ann Kiyomura |
| Eastbourne International | June 18–23 | Grass | 2nd Round | Wendy White |
| Eastbourne International | June 18–23 | Grass | 3rd Round | Carling Bassett |
| Eastbourne International | June 18–23 | Grass | Quarterfinal | Wendy Turnbull |
| Eastbourne International | June 18–23 | Grass | Semifinal | Claudia Kohde-Kilsch |
| Eastbourne International | June 18–23 | Grass | Final | Kathy Jordan |
| Wimbledon | June 25 – July 8 | Grass | 1st Round | Mareen Louie |
| Wimbledon | June 25 – July 8 | Grass | 2nd Round | Amy Holton |
| Wimbledon | June 25 – July 8 | Grass | 3rd Round | Iva Budařová |
| Wimbledon | June 25 – July 8 | Grass | 4th Round | Elizabeth Sayers |
| Wimbledon | June 25 – July 8 | Grass | Quarterfinal | Manuela Maleeva |
| Wimbledon | June 25 – July 8 | Grass | Semifinal | Kathy Jordan |
| Wimbledon | June 25 – July 8 | Grass | Final | Chris Evert-Lloyd |
| Virginia Slims of Newport | Jul 30 – Aug 5 | Grass | 1st Round | Jennifer Mundel-Reinbold |
| Virginia Slims of Newport | Jul 30 – Aug 5 | Grass | 2nd Round | Grace Kim |
| Virginia Slims of Newport | Jul 30 – Aug 5 | Grass | Quarterfinal | Wendy White |
| Virginia Slims of Newport | Jul 30 – Aug 5 | Grass | Semifinal | Anne Minter |
| Virginia Slims of Newport | Jul 30 – Aug 5 | Grass | Final | Gigi Fernández |
| United Jersey Bank Classic | Aug 13–19 | Hard | 1st Round | Not Played |
| United Jersey Bank Classic | Aug 13–19 | Hard | 2nd Round | Pascale Paradis |
| United Jersey Bank Classic | Aug 13–19 | Hard | 3rd Round | Kim Sands |
| United Jersey Bank Classic | Aug 13–19 | Hard | Quarterfinal | Barbara Potter |
| United Jersey Bank Classic | Aug 13–19 | Hard | Semifinal | Pam Casale |
| United Jersey Bank Classic | Aug 13–19 | Hard | Final | Pam Shriver |
| US Open | Aug 28 – Sep 9 | Hard | 1st Round | Lea Antonoplis |
| US Open | Aug 28 – Sep 9 | Hard | 2nd Round | Andrea Leand |
| US Open | Aug 28 – Sep 9 | Hard | 3rd Round | Jennifer Mundel-Reinbold |
| US Open | Aug 28 – Sep 9 | Hard | 4th Round | Barbara Potter |
| US Open | Aug 28 – Sep 9 | Hard | Quarterfinal | Helena Suková |
| US Open | Aug 28 – Sep 9 | Hard | Semifinal | Wendy Turnbull |
| US Open | Aug 28 – Sep 9 | Hard | Final | Chris Evert-Lloyd |
| Maybelline Classic | Sep 17–24 | Hard | 1st Round | Melissa Brown |
| Maybelline Classic | Sep 17–24 | Hard | 2nd Round | Rosalyn Fairbank |
| Maybelline Classic | Sep 17–24 | Hard | Quarterfinal | Elise Burgin |
| Maybelline Classic | Sep 17–24 | Hard | Semifinal | Wendy Turnbull |
| Maybelline Classic | Sep 17–24 | Hard | Final | Michelle Torres |
| Virginia Slims of New Orleans | Sep 24–30 | Carpet | 1st Round | Lisa Spain |
| Virginia Slims of New Orleans | Sep 24–30 | Carpet | 2nd Round | Mary-Lou Piatek |
| Virginia Slims of New Orleans | Sep 24–30 | Carpet | Quarterfinal | Jenny Klitch |
| Virginia Slims of New Orleans | Sep 24–30 | Carpet | Semifinal | Alycia Moulton |
| Virginia Slims of New Orleans | Sep 24–30 | Carpet | Final | Zina Garrison |
| NSW Building Society Open | Nov 19–25 | Grass | 1st Round | Not Played |
| NSW Building Society Open | Nov 19–25 | Grass | 2nd Round | Mary-Lou Piatek |
| NSW Building Society Open | Nov 19–25 | Grass | 3rd Round | Sharon Walsh |
| NSW Building Society Open | Nov 19–25 | Grass | Quarterfinal | Yvonne Vermaak |
| NSW Building Society Open | Nov 19–25 | Grass | Semifinal | Zina Garrison |
| NSW Building Society Open | Nov 19–25 | Grass | Final | Ann Henricksson |
| Australian Open | Nov 26 – Dec 9 | Grass | 1st Round | Yvonne Vermaak |
| Australian Open | Nov 26 – Dec 9 | Grass | 2nd Round | Mary-Lou Piatek |
| Australian Open | Nov 26 – Dec 9 | Grass | 3rd Round | Kathy Rinaldi |
| Australian Open | Nov 26 – Dec 9 | Grass | Quarterfinal | Barbara Potter |
| Australian Open | Nov 26 – Dec 9 | Grass | Semifinal | Lost to Helena Suková |
Question:
Name the surface for united airlines tournament of champions final round
Answer:
Clay