Underdog by Giorgio Moroder first appeared on the Israeli foreign-music chart on 6 Jun 1971, entering at #20. It peaked at #6 on 27 Jun 1971. In total it spent 8 weeks on the chart, last charting on 25 Jul 1971.
| Wk | Date | Pos |
|---|---|---|
| 1 | 6 Jun 1971 | 20 |
| 2 | 13 Jun 1971 | 18 |
| 3 | 20 Jun 1971 | 11 |
| 4 | 27 Jun 1971 | 6 |
| 5 | 4 Jul 1971 | 10 |
| 6 | 11 Jul 1971 | 14 |
| 7 | 18 Jul 1971 | 13 |
| 8 | 25 Jul 1971 | 17 |