As host Julie Chen mentioned last evening, with the final Head of Household competition underway and the "Big Brother 4" household down to only three houseguests, the "Big Brother 4" broadcast schedule will be changing slightly -- starting with the preemption of the Friday, September 12 show.

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The remaining "Big Brother 4" schedule will be as follows:

• Tuesday, September 16 (8-9 PM, ET/PT)
• Wednesday, September 17 (9-10 PM, ET/PT)
• Friday, September 19 (8-9 PM, ET/PT)
• Wednesday, September 24 Finale! (9-10 PM, ET/PT)