| Singles | |
|---|---|
| 1999 Gerry Weber Open | |
| Champion |  Nicolas Kiefer |
| Runner-up |  Nicklas Kulti |
| Final score | 6–3, 6–2 |
Yevgeny Kafelnikov was the defending champion, but did not take part in 1999.
| Singles | |
|---|---|
| 1999 Gerry Weber Open | |
| Champion | Nicolas Kiefer |
| Runner-up | Nicklas Kulti |
| Final score | 6–3, 6–2 |
Yevgeny Kafelnikov was the defending champion, but did not take part in 1999.
Patrick Rafter (second round)
Carlos Moyá (semifinals)
Richard Krajicek (first round)
Felix Mantilla (first round) Tommy Haas (quarterfinals) Nicolas Kiefer (champion)
Jérôme Golmard (first round)| Semifinals | Final | ||||||||||||
| 7 | Nicolas Kiefer | 6 | 6 | ||||||||||
 Daniel Vacek | 4 | 3 | |||||||||||
| 7 | Nicolas Kiefer | 6 | 6 | ||||||||||
| LL | Nicklas Kulti | 3 | 2 | ||||||||||
| LL | Nicklas Kulti | 6 | 6 | ||||||||||
| 2 | Carlos Moyá | 3 | 4 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | P Rafter | 6 | 7 | ||||||||||||||||||||||||
| A Ilie | 3 | 5 | 1 | P Rafter | 4 | 6 | 617 | ||||||||||||||||||||
| J Siemerink | 4 | 6 | 6 | J Siemerink | 6 | 3 | 719 | ||||||||||||||||||||
| P Haarhuis | 6 | 3 | 4 | J Siemerink | 4 | 2 | |||||||||||||||||||||
| Q | R Reneberg | 6 | 6 | 7 | N Kiefer | 6 | 6 | ||||||||||||||||||||
 M Rosset | 3 | 4 | R Reneberg | 1 | 4 | ||||||||||||||||||||||
| R Schüttler | 4 | 1 | 7 | N Kiefer | 6 | 6 | |||||||||||||||||||||
| 7 | N Kiefer | 6 | 6 | 7 | N Kiefer | 6 | 6 | ||||||||||||||||||||
| 3 | R Krajicek | 66 | 4 | D Vacek | 4 | 3 | |||||||||||||||||||||
| D Vacek | 78 | 6 | D Vacek | w/o | |||||||||||||||||||||||
| B Karbacher | 2 | 4 | J Novák | ||||||||||||||||||||||||
| J Novák | 6 | 6 | D Vacek | 6 | 6 | ||||||||||||||||||||||
| J Björkman | 6 | 6 |  G Pozzi | 4 | 3 | ||||||||||||||||||||||
 J Krošlák | 4 | 3 | J Björkman | 6 | 3 | 3 | |||||||||||||||||||||
| G Pozzi | 6 | 6 | G Pozzi | 2 | 6 | 6 | |||||||||||||||||||||
| 5 | F Mantilla | 2 | 2 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | T Haas | 6 | 7 | ||||||||||||||||||||||||
| G Raoux | 4 | 5 | 6 | T Haas | 6 | 77 | |||||||||||||||||||||
| SE |  A Medvedev | 1 | 7 | 4 | WC | H Dreekmann | 4 | 64 | |||||||||||||||||||
| WC | H Dreekmann | 6 | 5 | 6 | 6 | T Haas | 66 | 7 | 3 | ||||||||||||||||||
| Q | J Stark | 3 | 4 | LL | N Kulti | 78 | 5 | 6 | |||||||||||||||||||
| J Gimelstob | 6 | 6 | J Gimelstob | 4 | 4 | ||||||||||||||||||||||
| J van Lottum | 1 | 1 | LL | N Kulti | 6 | 6 | |||||||||||||||||||||
| LL | N Kulti | 6 | 6 | LL | N Kulti | 6 | 6 | ||||||||||||||||||||
| 8 | J Golmard | 5 | 0 | 2 | C Moyá | 3 | 4 | ||||||||||||||||||||
| S Schalken | 7 | 6 | S Schalken | 77 | 6 | ||||||||||||||||||||||
| Q | O Burrieza | 64 | 7 | 77 | Q | O Burrieza | 62 | 2 | |||||||||||||||||||
| M Larsson | 77 | 5 | 65 | S Schalken | 3 | 65 | |||||||||||||||||||||
| D Prinosil | 6 | 7 | 2 | C Moyá | 6 | 77 | |||||||||||||||||||||
| Q |  K Ullyett | 3 | 5 | D Prinosil | 4 | 4 | |||||||||||||||||||||
| M Gustafsson | 3 | 2 | 2 | C Moyá | 6 | 6 | |||||||||||||||||||||
| 2 | C Moyá | 6 | 6 | ||||||||||||||||||||||||
The 1999 Thalgo Australian Women's Hardcourts singles was the singles event of the third edition of the Thalgo Australian Women's Hardcourts; a WTA Tier III tournament held in the Gold Coast. Ai Sugiyama was the defending champion but lost in the semifinals to Patty Schnyder.
The 1999 Thalgo Australian Women's Hardcourts doubles was the doubles event of the third edition of the Thalgo Australian Women's Hardcourts; a WTA Tier III tournament held in the Gold Coast. Elena Likhovtseva and Ai Sugiyama were the defending champions but lost in the first round to Anke Huber and Mary Pierce.
The 1999 ASB Classic singles was the singles event of the fourteenth edition of the ASB Classic; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in New Zealand. Dominique Van Roost was the defending champion but lost in the final 6–4, 6–1 against Julie Halard-Decugis.
The 1999 ANZ Tasmanian International singles was the singles event of the sixth edition of the ANZ Tasmanian International. Patty Schnyder was the defending champion but did not compete that year.
The 1999 Copa Colsanitas singles was the singles event of the second edition of the Copa Colsanitas; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Colombia and Hispanic America. Paola Suárez was the defending champion but lost in the semifinals to Christína Papadáki.
The 1999 IGA SuperThrift Classic singles was the singles event of the fourteenth edition of the IGA SuperThrift Classic; a WTA Tier III tournament held in Oklahoma City, United States. Venus Williams was the defending champion and won in the final 6–4, 6–0 against Amanda Coetzer.
The 1999 Westel 900 Budapest Open singles was the singles event of the second edition of the Budapest Grand Prix; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Hungary. Virginia Ruano Pascual was the defending champion but lost in the first round to Amanda Hopmans.
Mary Pierce was the defending champion, but lost to Ai Sugiyama in the second round.
Anastasia Myskina was the defending champion, but chose not to participate that year.
The 1999 Croatian Bol Ladies Open singles was the singles event of the sixth edition of the Croatian Bol Ladies Open, a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Croatia. Mirjana Lučić was the two-time defending champion, but she did not compete this year.
There was no defending champion, due to the cancellation of the semifinals in 1998 due to rain.
The 1999 Orange Prokom Open singles was the singles event of the second edition of the most prestigious women's tennis tournament held in Poland. Henrieta Nagyová was the defending champion, and the sixth seed this year, but she retired 2–6, 1–4 down against Silvija Talaja.
The 1999 TIG Classic singles was the singles event of the twentieth edition of the second tournament in the US Open Series.
The 1999 Acura Classic singles was the singles event of the twentieth edition of the third tournament in the US Open Series.
The 1999 Toyota Princess Cup singles was the tennis singles event of the third edition of the first hardcourt tournament after the US Open. Monica Seles was the two-time defending champion, but was defeated by Lindsay Davenport in the final to win the title.
Sandrine Testud was the defending champion, but was defeated by Martina Hingis in the semifinals.
The 1999 Pattaya Women's Open doubles was the tennis doubles event of the first edition of the most prestigious tournament in Thailand. Émilie Loit and Åsa Carlsson won the title, in what was both players' first WTA doubles title, over Evgenia Koulikovskaya and Patricia Wartusch.
Jana Novotná was the defending champion, but she retired from tennis earlier in the year.
Yan Zi and Zheng Jie were the defending champions, but did not participate.
The 1999 Advanta Championships of Philadelphia singles was the tennis singles event of the seventeenth edition of the Advanta Championships of Philadelphia; a WTA Tier II tournament held in Philadelphia. Steffi Graf was the defending champion but retired after Wimbledon earlier in the year.