Monte Carlo Masters 1981 ATP
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Guillermo Vilas | d. | Adriano Panatta | 6-2 6-2 |
| Jimmy Connors | d. | Balazs Taroczy | 6-1 7-6 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Adriano Panatta | d. | Jose Higueras | 6-1 1-6 6-4 |
| Balazs Taroczy | d. | Ricardo Cano | 6-2 6-3 |
| Guillermo Vilas | d. | Tomas Smid | 6-0 1-6 7-6 |
| Jimmy Connors | d. | Yannick Noah | 6-3 6-2 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Adriano Panatta | d. | Victor Pecci | 6-3 6-2 |
| Jose Higueras | d. | Buster C Mottram | 3-6 6-4 6-1 |
| Ricardo Cano | d. | Sammy Giammalva Jr | 6-7 6-2 6-1 |
| Tomas Smid | d. | Gilles Moretton | 6-1 7-6 |
| Balazs Taroczy | d. | Christophe Roger Vasselin | 6-4 6-1 |
| Yannick Noah | d. | Gabriel Urpi | 7-5 5-7 7-5 |
| Guillermo Vilas | d. | Gianni Ocleppo | 6-4 6-1 |
| Jimmy Connors | d. | Pascal Portes | 6-3 6-1 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Gabriel Urpi | d. | Angel Gimenez | 6-2 1-6 6-2 |
| Christophe Roger Vasselin | d. | Chris Lewis | 6-4 6-3 |
| Pascal Portes | d. | Andrew Pattison | 7-5 6-1 |
| Adriano Panatta | d. | Fernando Luna | 6-3 6-2 |
| Gianni Ocleppo | d. | Manuel Orantes | 6-4 6-3 |
| Buster C Mottram | d. | Heinz Gunthardt | 6-2 6-0 |
| Gilles Moretton | d. | Shlomo Glickstein | 6-3 5-7 6-4 |
| Sammy Giammalva Jr | d. | Christophe Casa | 6-3 2-6 6-4 |
| Ricardo Cano | d. | Pavel Slozil | 7-6 6-0 |
| Tomas Smid | d. | Thierry Tulasne | 3-6 7-6 6-2 |
| Balazs Taroczy | d. | Kjell Johansson | 6-1 6-0 |
| Yannick Noah | d. | Mario Martinez | 6-2 6-2 |
| Jose Higueras | d. | Jose Luis Clerc | 7-6 6-1 |
| Guillermo Vilas | d. | Ilie Nastase | 6-0 6-0 |
| Jimmy Connors | d. | Corrado Barazzutti | 6-4 7-6 |
| Victor Pecci | d. | Bjorn Borg | 6-0 4-6 7-5 |