Complex sentence: Roiha played his first match for the Finnish national team on February 1,2001 against Sweden; however, he has not been able to become a regular for Finland in qualifying matches due the unfortunate timing of injury.
Split into simpler sentences: Roiha played his first match for the Finnish national team on February 1,2001 against Sweden. However, he has not been able to become a regular for Finland in qualifying matches due the unfortunate timing of injury.