🇦🇷 Guillermo Vilas — 28 straight wins
Tehran 1977 → Masters 1978 · opponent rank mean 75.9, median 84.5 (28 of 28 opponents ranked) · ended by Bjorn Borg at Masters 1978
| # | Year | Tournament | Rd | Opponent | Opp. rank | Score | |
|---|---|---|---|---|---|---|---|
| 1 | 1977 | Tehran | Clay | R64 | Richard Lewis | 130 | 6-4 7-5 |
| 2 | 1977 | Tehran | Clay | R32 | Vladimir Zednik | 117 | 3-6 6-3 6-3 |
| 3 | 1977 | Tehran | Clay | R16 | Ion Tiriac | 97 | 6-4 6-4 |
| 4 | 1977 | Tehran | Clay | QF | Buster C. Mottram | 27 | 6-1 6-2 |
| 5 | 1977 | Tehran | Clay | SF | Wojtek Fibak | 14 | 6-1 7-6 |
| 6 | 1977 | Tehran | Clay | F | Eddie Dibbs | 8 | 6-2 6-4 1-6 6-1 |
| 7 | 1977 | Bogota | Clay | R32 | Ricardo Cano | 86 | 6-4 6-2 |
| 8 | 1977 | Bogota | Clay | R16 | Paul McNamee | 113 | 7-5 7-6 |
| 9 | 1977 | Bogota | Clay | QF | Ramiro Benavides | 203 | 6-3 6-3 |
| 10 | 1977 | Bogota | Clay | SF | Victor Pecci | 48 | 6-4 6-2 |
| 11 | 1977 | Bogota | Clay | F | Jose Higueras | 32 | 6-1 6-2 6-3 |
| 12 | 1977 | Santiago | Clay | R32 | Paul McNamee | 105 | 7-5 6-1 |
| 13 | 1977 | Santiago | Clay | R16 | Eric Deblicker | 94 | 6-3 6-4 |
| 14 | 1977 | Santiago | Clay | QF | Gene Mayer | 147 | 6-4 6-4 |
| 15 | 1977 | Santiago | Clay | SF | Ricardo Ycaza | 152 | 6-1 6-1 |
| 16 | 1977 | Santiago | Clay | F | Jaime Fillol Sr. | 19 | 6-0 2-6 6-4 |
| 17 | 1977 | Buenos Aires-2 | Clay | R32 | Eric Deblicker | 83 | 7-6 6-2 |
| 18 | 1977 | Buenos Aires-2 | Clay | R16 | Ivan Molina | 90 | 6-3 6-0 |
| 19 | 1977 | Buenos Aires-2 | Clay | QF | Belus Prajoux | 130 | 6-3 6-2 |
| 20 | 1977 | Buenos Aires-2 | Clay | SF | Hans Gildemeister | 50 | 7-6 6-4 |
| 21 | 1977 | Buenos Aires-2 | Clay | F | Jaime Fillol Sr. | 17 | 6-2 7-5 3-6 6-3 |
| 22 | 1977 | Johannesburg-2 | Hard | R32 | Onny Parun | 133 | 1-6 6-2 7-5 |
| 23 | 1977 | Johannesburg-2 | Hard | R16 | Jim Delaney | 130 | 6-1 6-1 |
| 24 | 1977 | Johannesburg-2 | Hard | QF | Peter Fleming | 45 | 7-6 0-6 6-4 |
| 25 | 1977 | Johannesburg-2 | Hard | SF | Stan Smith | 23 | 6-2 6-4 |
| 26 | 1977 | Johannesburg-2 | Hard | F | Buster C. Mottram | 24 | 7-6 6-3 6-4 |
| 27 | 1978 | Masters | Carpet | RR | Jimmy Connors | 1 | 6-4 3-6 7-5 |
| 28 | 1978 | Masters | Carpet | RR | Manuel Orantes | 7 | 6-4 6-1 |