Complex sentence: After ratings increased she was moved to the coveted evening time slot--on September 4,2000 Vance became the first woman in the history of Canadian television to host her own sports show in primetime.
Split into simpler sentences: After ratings increased, she was moved to the coveted evening time slot. On September 4,2000 Vance became the first woman in the history of Canadian television to host her own sports show in primetime.