Survivor: Philippines dropped 4% to a demo rating of 2.7 and 10.11 million viewers at 8pm.
Criminal Minds climbed 3% from last week to 3.1 (11.76m) at 9pm, while CSI fell 8% to 2.4 (10.56m) at 10pm.
The CW's Arrow maintained its good premiere score last week of 1.3 (3.48m) at 8pm, with Supernatural also levelling at 1.0 (2.19m) at 9pm.
ABC's The Middle rose 4% to 2.5 (8.35m) at 8pm, with The Neighbors dipping 5% to 1.9 (6.50m) at 8.30pm.
Modern Family also dropped 4% to 4.6, but was still the highest rated and most watched show of the night overall with 12.1m at 9pm.
The season premiere of Suburgatory fell 15% from its last opener to 2.8 (7.60m) at 9.30pm, but rose a huge 55% from its season finale in May.
Nashville's second episode dropped a large 28% to 2.0 (6.75m) at 10pm.
NBC's newly-axed Animal Practice dipped 9% to 1.0 (3.80m) at 8pm, while Guys With Kids was level at 1.4 (4.29m) at 8.30pm.
Law & Order: SVU also fell 9% to 1.6 (6.31m) at 9pm, with Chicago Fire dropping a big 21% from last week's opener to 1.5 (5.91m) at 10pm.
Fox's preliminary ratings will be confirmed tomorrow due to the rain-hit baseball coverage, which delayed its programming, including a live episode of The X Factor USA.