Preemptions by NFL preseason games in certain markets once again pumped up the Thursday overnight ratings, meaning the numbers will be subject to greater adjustment than normal later today.

“Big Brother” on CBS is currently the top show of the night with a 1.8 rating in adults 18-49 and 6.5 million viewers.

ABC aired a tribute to Aretha Franklin (0.8, 4.8 million), a new episode of “Match Game” (0.8, 4 million) and “Take Two” (0.6, 3.5 million).

Fox aired only the special “Camping World Truck Series: UNOH 200,” which drew a 0.4 and 1.4 million viewers.

NBC aired a new episode of “Trial & Error” at both 9 p.m. (0.9, 3.4 million) and at 9:30 (0.7, 2.8 million).

The CW aired only repeats.