CBS has announced that "Big Brother 4" won all three of its time periods in adults 18-49 and adults 25-54 for the week ending July 27, 2003.

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Tuesday's "Big Brother 4" was first in households (5.2/09), viewers (7.78m), adults 25-54 (3.9/12), adults 18-49 (3.3/11) and adults 18-34 (3.3/12).

The Wednesday edition of "Big Brother 4" was first in adults 25-54 (4.5/12), adults 18-49 (4.0/12), tied for first in adults 18-34 (3.9/13, tied with FOX) and second in households (5.8/10) and viewers (8.97m).

Friday's "Big Brother 4" was first in adults 25-54 (2.9/11) and adults 18-49 (2.4/10) while second in adults 18-34 (2.0/09).