| Label: | A&M Records AMS 822 |
| Genre: | Pop |
| Style: | Schlager |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Underdog | |
| B | Watch Yourself |
| Label: | Polydor 2056 084 |
| Genre: | Pop |
| Style: | Schlager |
| Format: | Vinyl (7") |
| A1 | Underdog | 3:45 |
| B1 | Watch Your Step | 3:48 |
| Label: | Hansa 14 809 AT |
| Genre: | Rock, Pop |
| Style: | Pop Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Underdog | 3:56 |
| B | Watch Your Step | 3:26 |
| Label: | Stop International, Ariola 14909-A |
| Genre: | Electronic, Rock, Pop |
| Style: | Psychedelic Rock |
| Format: | Vinyl (7" , Single , 45 RPM , Mono) |
| A | Underdog | 3:52 |
| B | Watch Yourself | 3:23 |