Complex sentence: In 2003, Andrijevic was traded to division rivals the Hamilton Thunder, with the franchise he clinched the Western Conference title and featured in the semi-final match against Vaughan Sun Devils, but were defeated by a score of 2-0.
Split into simpler sentences: In 2003, Andrijevic was traded to division rivals Hamilton Thunder, where he clinched the Western Conference title. He featured in the semi-final match against Vaughan Sun Devils, where Vaughan was defeated by a score of 2-0.