Complex sentence: He made his ATP Tour debut by virtue of wild cards at the 2006 Artois Championship and played at the 2006 Wimbledon Championships, before making his debut for the Great Britain Davis Cup team in September 2006 in the crucial relegation play-off against the Ukraine.
Split into simpler sentences: He made his ATP Tour debut by virtue of wild cards at the 2006 Artois Championship and played at the 2006 Wimbledon Championships. Baker made his debut for the Great Britain Davis Cup team in September 2006 in the crucial relegation play-off against the Ukraine.