Houston 1999 • ATP 250 — Trekning
19 — 25 april
- USAx5
- Argentinax4
- Australiax4
- Spainx4
- Swedenx3
- Francex2
- Italyx2
- Armeniax1
- Austriax1
- Belgiumx1
- Belarusx1
- Bulgariax1
- Czech Republicx1
- Norwayx1
- Romaniax1
- Argentinax3
- Spainx3
- Australiax2
- Armeniax1
- Belarusx1
- Francex1
- Italyx1
- Norwayx1
- Romaniax1
- Swedenx1
- USAx1
- Argentinax2
- Belarusx1
- Spainx1
- Norwayx1
- Romaniax1
- Swedenx1
- USAx1
- Argentinax1
- Belarusx1
- Norwayx1
- Swedenx1