Maria João Koehler
Maria João Koehler is a retired Portuguese tennis player.
Koehler won four singles and four doubles titles on the ITF Women's Circuit in her career. On 25 February 2013, she reached her best singles ranking of world No. 102. On 18 June 2012, she peaked at No. 151 in the doubles rankings.
Playing for the Portugal Fed Cup team, Koehler has a win–loss record of 11–20.
Career
Born in Porto, Koehler made her debut on the ITF Women's Circuit at the age of 14 at a $10k event in Braga. Having qualified for the main draw, she lost her first match to Catarina Ferreira.She made her WTA Tour main-draw debut at the 2009 Estoril Open. Having been awarded a wildcard, she played world No. 77, Kristina Barrois, in the first round, losing in straight sets.
Grand Slam singles performance timeline
| Tournament | 2011 | 2012 | 2013 | 2014 | W–L |
| Australian Open | A | 1R | 2R | Q1 | 1–2 |
| French Open | A | A | 1R | A | 0–1 |
| Wimbledon | A | Q2 | 1R | A | 0–1 |
| US Open | Q1 | Q2 | 1R | A | 0–1 |
| Win–loss | 0–0 | 0–1 | 1–4 | 0–0 | 1–5 |
ITF Circuit finals
Singles: 12 (4 titles, 8 runner-ups)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score | |||||||||||||||
| Loss | 0–1 | Jun 2008 | ITF Montemor-o-Novo, Portugal | 10,000 | Hard |  Doubles: 8 (4 titles, 4 runner-ups)
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