| As of 9 January 1989 |
| Rk |
Name |
Nation |
| 1 |
Mats Wilander |
SWE |
| 2 |
Ivan Lendl |
TCH |
| 3 |
Andre Agassi |
USA |
| 4 |
Boris Becker |
FRG |
| 5 |
Stefan Edberg |
SWE |
| 6 |
Kent Carlsson |
SWE |
| 7 |
Jimmy Connors |
USA |
| 8 |
Jakob Hlasek |
SUI |
| 9 |
Henri Leconte |
FRA |
| 10 |
Tim Mayotte |
USA |
| 11 |
John McEnroe |
USA |
| 12 |
Yannick Noah |
FRA |
| 13 |
Miloslav Mečíř |
TCH |
| 14 |
Aaron Krickstein |
USA |
| 15 |
Thomas Muster |
AUT |
| 16 |
Emilio Sánchez |
ESP |
| 17 |
Guillermo Pérez-Roldán |
ARG |
| 18 |
Mikael Pernfors |
SWE |
| 19 |
Pat Cash |
AUS |
| 20 |
Jonas Svensson |
SWE |
|
| Year-end rankings (18 December 1989) |
| Rk |
Name |
Nation |
Points |
High |
Low |
Change |
| 1 |
Ivan Lendl |
TCH |
|
1 |
2 |
+1 |
| 2 |
Boris Becker |
FRG |
|
2 |
5 |
+2 |
| 3 |
Stefan Edberg |
SWE |
|
3 |
5 |
+2 |
| 4 |
John McEnroe |
USA |
|
4 |
11 |
+7 |
| 5 |
Michael Chang |
USA |
|
5 |
30 |
+25 |
| 6 |
Brad Gilbert |
USA |
|
5 |
22 |
+16 |
| 7 |
Andre Agassi |
USA |
|
3 |
7 |
−4 |
| 8 |
Aaron Krickstein |
USA |
|
8 |
18 |
+6 |
| 9 |
Alberto Mancini |
ARG |
|
8 |
49 |
+40 |
| 10 |
Jay Berger |
USA |
|
10 |
42 |
+24 |
| 11 |
Martín Jaite |
ARG |
|
11 |
79 |
+42 |
| 12 |
Mats Wilander |
SWE |
|
1 |
16 |
−11 |
| 13 |
Tim Mayotte |
USA |
|
8 |
13 |
−3 |
| 14 |
Jimmy Connors |
USA |
|
7 |
19 |
−7 |
| 15 |
Carl-Uwe Steeb |
FRG |
|
15 |
96 |
+54 |
| 16 |
Yannick Noah |
FRA |
|
12 |
25 |
−4 |
| 17 |
Andrés Gómez |
ECU |
|
17 |
40 |
+7 |
| 18 |
Miloslav Mečíř |
TCH |
|
8 |
28 |
−5 |
| 19 |
Emilio Sánchez |
ESP |
|
13 |
24 |
−3 |
| 20 |
Kevin Curren |
USA |
|
14 |
27 |
+3 |
|