Repeats of its comedies and “CSI: Miami” helped CBS edge out ABC’s firstrun lineup led by “The Bachelorette” on another sleepy summer Monday evening. The Eye won narrowly in demos and by a wide margin in total viewers, with its “Two and a Half Men” the most-watched program.

According to preliminary nationals from Nielsen, “Two and a Half Men” led its timeslot in adults 18-49 (2.8 rating/8 share), total viewers (10.1 million) and other categories, and “The Big Bang Theory” (2.6/7 in 18-49, 8.4 million viewers overall) held onto most of its demo lead-in as it continues to air this summer in the 9:30 p.m. slot it will inhabit in the fall. CBS was also competitive in the opening hour with repeats of “Big Bang” (1.8/6 in 18-49, 6.1 million viewers overall) and “How I Met Your Mother” (2.0/6 in 18-49, 5.7 million viewers overall) and led at 10 p.m. with an encore of “CSI: Miami” (2.0/6 in 18-49, 8.2 million viewers overall).

ABC looked good, and grew each half-hour, with its two-hour “The Bachelorette” (2.4/7 in 18-49, 6.8 million viewers overall), but “Here Come the Newlyweds” was on the low side at 10 p.m. (1.6/5 in 18-49, 4.2 million viewers overall).

NBC was down week to week with its firstrun lineup of “I’m a Celebrity, Get Me Out of Here” (1.8/5 in 18-49, 4.9 million viewers overall) and “Dateline” (1.9/6 in 18-49, 5.6 million viewers overall), while Fox wasn’t much of a factor with repeats of “House” (1.7/5 in 18-49, 4.9 million viewers overall) and “Lie to Me” (1.5/4 in 18-49, 4.6 million viewers overall), which was airing for the first time in its fall timeslot.

Preliminary 18-49 averages for the night: CBS, 2.2/6; ABC, 2.1/6; NBC, 1.8/5; Fox, 1.6/5; Univision, 1.4/4; CW, 0.3/1.

In total viewers: CBS, 7.8 million; ABC, 5.9 million; NBC, 5.2 million; Fox, 4.7 million; Univision, 3.7 million; CW, 0.9 million.