On a Tuesday night when not one program broke a 2.0 rating among adults 18-49, CBS and NBC emerged in a virtual tie for primetime bragging rights, such as they were, in the demo.

The Eye boasted nearly twice as many overall viewers as any other network, however, according to preliminary nationals from Nielsen.

The blase evening among the English-language broadcast networks allowed Univision to finish third in the demo and fourth in overall viewers.

A repeat airing of “The Mentalist” (1.8 rating/5 share in 18-49, 10.0 million viewers overall) at 9 p.m. was the most-watched program of the night in the demo, edging an 8 p.m. firstrun edition of NBC’s “I’m a Celebrity … Get Me Out of Here” (1.7/6, 4.7 million).

“Celebrity” went up against an all-rerun slate by other networks at 8 p.m. and topped CBS’ “NCIS” (1.6/5, 10.2 million), Fox’s “House” (1.3/4, 3.9 million), two ABC airings of “According to Jim” (averaging 0.9/3, 3.1 million) and the CW’s “90210” (0.3/1, 1.0 million).

At 9 p.m., “The Mentalist” bested new episodes of Fox’s “Mental” (1.4/4, 4.7 million) and CW’s “Hitched and Ditched” (0.5/1, 1.2 million), along with repeats of NBC’s “Law and Order: SVU” (1.4/4, 4.4 million) and ABC’s “Scrubs” (0.7/2, 2.0 million) and “Better Off Ted” (0.5/2, 1.5 million).

A second “SVU” repeat (1.7/5, 5.6 million) brought NBC an 18-49 victory at 10 p.m., though it lost to CBS’ “48 Hours Mystery” (1.6/5, 7.3 million) in overall viewers. The series finale of ABC’s second version of “Cupid” (0.7/2, 2.1 million) went out quietly.

Preliminary 18-49 averages for the night: CBS 1.6/5, NBC 1.6/5, Univision 1.4/4, Fox 1.3/4, ABC 0.7/2, CW 0.4/1.

In total viewers: CBS 9.2 million, NBC 4.9 million, Fox 4.3 million, Univision 3.5 million, ABC 2.3 million, CW 1.1 million.