| As of 1 January 1990 |
| Rk |
Name |
Nation |
Points |
| 1 |
Ivan Lendl |
TCH |
2913 |
| 2 |
Boris Becker |
GER |
2279 |
| 3 |
Stefan Edberg |
SWE |
2111 |
| 4 |
Brad Gilbert |
USA |
1398 |
| 5 |
John McEnroe |
USA |
1354 |
| 6 |
Michael Chang |
USA |
1328 |
| 7 |
Aaron Krickstein |
USA |
1217 |
| 8 |
Andre Agassi |
USA |
1160 |
| 9 |
Jay Berger |
USA |
1039 |
| 10 |
Alberto Mancini |
ARG |
1024 |
| 11 |
Martín Jaite |
ARG |
945 |
| 12 |
Tim Mayotte |
USA |
871 |
| 13 |
Mats Wilander |
SWE |
780 |
| 14 |
Andrés Gómez |
ECU |
742 |
| 15 |
Carl-Uwe Steeb |
GER |
738 |
| 16 |
Jimmy Connors |
USA |
733 |
| 17 |
Emilio Sánchez |
ESP |
706 |
| 18 |
Horst Skoff |
AUT |
695 |
| 19 |
Andrei Chesnokov |
URS |
688 |
| 20 |
Kevin Curren |
USA |
684 |
|
| Year-end rankings (31 December 1990) |
| Rk |
Name |
Nation |
Points |
High |
Low |
Change |
| 1 |
Stefan Edberg |
SWE |
3889 |
1 |
3 |
+2 |
| 2 |
Boris Becker |
GER |
3528 |
2 |
3 |
= |
| 3 |
Ivan Lendl |
TCH |
2581 |
1 |
3 |
−2 |
| 4 |
Andre Agassi |
USA |
2398 |
4 |
8 |
+4 |
| 5 |
Pete Sampras |
USA |
1888 |
5 |
69 |
+56 |
| 6 |
Andrés Gómez |
ECU |
1680 |
4 |
18 |
+8 |
| 7 |
Thomas Muster |
AUT |
1654 |
6 |
34 |
+27 |
| 8 |
Emilio Sánchez |
ESP |
1564 |
7 |
19 |
+9 |
| 9 |
Goran Ivanišević |
YUG |
1514 |
9 |
53 |
+20 |
| 10 |
Brad Gilbert |
USA |
1451 |
4 |
10 |
−6 |
| 11 |
Jonas Svensson |
SWE |
1365 |
11 |
51 |
+30 |
| 12 |
Andrei Chesnokov |
URS |
1361 |
10 |
21 |
+7 |
| 13 |
John McEnroe |
USA |
1210 |
4 |
21 |
−8 |
| 14 |
Guillermo Pérez-Roldán |
ARG |
1190 |
14 |
37 |
+16 |
| 15 |
Michael Chang |
USA |
1119 |
5 |
24 |
−9 |
| 16 |
Guy Forget |
FRA |
1101 |
14 |
81 |
+39 |
| 17 |
Jakob Hlasek |
SUI |
1089 |
17 |
56 |
+11 |
| 18 |
Jay Berger |
USA |
1066 |
7 |
18 |
−9 |
| 19 |
Juan Aguilera |
ESP |
1042 |
14 |
74 |
+45 |
| 20 |
Aaron Krickstein |
USA |
1025 |
6 |
20 |
−13 |
|