| Singles | |
|---|---|
| 1999 AT&T Challenge | |
| Champions |  Stefan Koubek [1] |
| Runners-up |  Sébastien Grosjean |
| Score | 6–1, 6–2 |
| Draw | 32 |
| Seeds | 8 |
The 1999 AT&T Challenge was a men's tennis tournament played on Clay in Atlanta, United States that was part of the World Series of the 1999 ATP Tour. It was the fourteenth edition of the tournament and was held from 26 April – 2 May 1999.
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
Patrick Rafter (first round) Jason Stoltenberg (quarterfinals)
Vince Spadea (first round) Michael Chang (second round) Sébastien Grosjean (final) Scott Draper (first round) Jan-Michael Gambill (first round)
Magnus Larsson (semifinals)| Semifinals | Final [1] | ||||||||||||
| Jim Courier | 63 | 3 | |||||||||||
| 5 | Sébastien Grosjean | 7 | 6 | ||||||||||
| Stefan Koubek | 6 | 6 | |||||||||||
| 5 | Sébastien Grosjean | 1 | 2 | ||||||||||
| Stefan Koubek | 5 | 6 | 6 | ||||||||||
| 8 | Magnus Larsson | 7 | 4 | 1 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
 M Rodríguez | 7 | 7 | |||||||||||||||||||||||||
| 1 | P Rafter | 65 | 65 | M Rodríguez | 7 | 6 | |||||||||||||||||||||
 JA Marín | 6 | 6 | JA Marín | 66 | 3 | ||||||||||||||||||||||
 L Horna | 4 | 3 | M Rodríguez | 1 | 62 | ||||||||||||||||||||||
| J Courier | 6 | 6 | J Courier | 6 | 7 | ||||||||||||||||||||||
| M Tillström | 3 | 4 | J Courier | 6 | 7 | ||||||||||||||||||||||
| J Gimelstob | 6 | 6 | J Gimelstob | 1 | 65 | ||||||||||||||||||||||
| 7 | J-M Gambill | 0 | 4 | J Courier | 63 | 3 | |||||||||||||||||||||
 M Mirnyi | 7 | 6 | 5 | S Grosjean | 7 | 6 | |||||||||||||||||||||
| 3 | V Spadea | 5 | 3 | M Mirnyi | 6 | 4 | 1 | ||||||||||||||||||||
 S Sargsian | 6 | 6 | S Sargsian | 3 | 6 | 6 | |||||||||||||||||||||
| C Woodruff | 4 | 4 | S Sargsian | 4 | 65 | ||||||||||||||||||||||
 M Filippini | 7 | 6 | 5 | S Grosjean | 6 | 7 | |||||||||||||||||||||
 P Korda | 5 | 1 | M Filippini | 4 | 2 | ||||||||||||||||||||||
| 5 | S Grosjean | 66 | 7 | 6 | 5 | S Grosjean | 6 | 6 | |||||||||||||||||||
| C Mamiit | 7 | 5 | 1 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| G Cañas | 6 | 6 | |||||||||||||||||||||||||
| 6 | S Draper | 4 | 3 | G Cañas | 63 | 64 | |||||||||||||||||||||
 A Martín | 6 | 4 | 7 | A Martín | 7 | 7 | |||||||||||||||||||||
 I Labadze | 2 | 6 | 64 | A Martín | 5 | 2 | |||||||||||||||||||||
| S Koubek | 6 | 7 | S Koubek | 7 | 6 | ||||||||||||||||||||||
| T Woodbridge | 2 | 64 | S Koubek | 6 | 6 | ||||||||||||||||||||||
| 4 | M Chang | 6 | 6 | 4 | M Chang | 1 | 4 | ||||||||||||||||||||
 G Pozzi | 4 | 2 | S Koubek | 5 | 6 | 6 | |||||||||||||||||||||
| 8 | M Larsson | 6 | 6 | 8 | M Larsson | 7 | 4 | 1 | |||||||||||||||||||
 J Van Herck | 3 | 2 | 8 | M Larsson | 7 | 2 | 6 | ||||||||||||||||||||
| G Blanco | 6 | 7 | G Blanco | 66 | 6 | 1 | |||||||||||||||||||||
| M Norman | 4 | 63 | 8 | M Larsson | 6 | 6 | |||||||||||||||||||||
| M Woodforde | 2 | 6 | 6 | 2 | J Stoltenberg | 2 | 2 | ||||||||||||||||||||
| L Hewitt | 6 | 3 | 4 | M Woodforde | 2 | 3 | |||||||||||||||||||||
| 2 | J Stoltenberg | 6 | 6 | 2 | J Stoltenberg | 6 | 6 | ||||||||||||||||||||
| P Goldstein | 4 | 1 | |||||||||||||||||||||||||
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