Complex sentence: Williams made his professional rugby league debut for the Canterbury Bulldogs during the 2004 National Rugby League (NRL) season, and made his international debut for the New Zealand Kiwis in the 2004 Anzac Test.
Split into simpler sentences: Williams made his professional rugby league debut for the Canterbury Bulldogs during the 2004 National Rugby League (NRL) season. He made his international debut for the New Zealand Kiwis in the 2004 Anzac Test.