Due to the injury of the British rider Tai Woffinden N° 5, he will be replaced, according to Art. 070.4.6 of the Track Racing Appendices, by Andrew Bargh from New Zealand (MNZ).
 
Hynek Stichauer from Czech Republic (ACCR) will replace Andrew Bargh at substitute N° 18.
 
In top of that, the two seeded riders from Poland (PZM) and Latvia (LaMSF) were announced. Revised line-up below.

Individual Speedway Junior World Championship, Semi-Final 2, Daugavpils (Latvia) 17.06.2007

Starting N° Name & first name FMN Country
1 Thomas H JONASSON SVEMO Sweden
2 Maksim BOGDANOV LaMSF Latvia
3 Emil SAIFUTDINOV MFR Russia
4 Marcin JEDRZEJEWSKI PZM Poland
5 Andrew BARGH MNZ New Zealand
6 Martin VACULIK SMF Slovakia
7 Pavel HLIB PZM Poland
8 Ben BARKER ACU Great Britain
9 Ricky KLING SVEMO Sweden
10 Karol Zabik PZM Poland
11 Patrick HOUGAARD DMU Denmark
12 Robert KSIEZAK MA Australia
13 Luboš TOMIČEK ACCR Czech Republic
14 Krzysztof BUCZKOWSKI PZM Poland
15 Kasts POUDZUKS LaMSF Latvia
16 Daniil IVANOV MFR Russia
Substitute rider 17 Andriy KARPOV FMU Ukraine
Substitute rider 18 Hynek STICHAUER ACCR Czech Republic