Baby, What a Big Surprise by Chicago first appeared on the Israeli foreign-music chart on 30 Oct 1977, entering at #19. It peaked at #7 on 27 Nov 1977. In total it spent 10 weeks on the chart, last charting on 1 Jan 1978. It also made the year-end chart: #73 of 1978.
| Wk | Date | Pos |
|---|---|---|
| 1 | 30 Oct 1977 | 19 |
| 2 | 6 Nov 1977 | 16 |
| 3 | 13 Nov 1977 | 14 |
| 4 | 20 Nov 1977 | 10 |
| 5 | 27 Nov 1977 | 7 |
| 6 | 4 Dec 1977 | 10 |
| 7 | 11 Dec 1977 | 14 |
| 8 | 18 Dec 1977 | 18 |
| 9 | 25 Dec 1977 | 22 |
| 10 | 1 Jan 1978 | 27 |