Ratings Chart Attack!

Game six of the NBA Finals dominated Tuesday night in the ratings as much as the Boston Celtics lorded over the Los Angeles Lakers during the game, the last of the series.

ABC (4.5/13) won the night by 45%, as game six pulled down a tentative 5.2 rating/14 share in the 18- to 49-year-old demographic, according to preliminary Nielsen research.

This year’s final game leapt up 53% over last year’s preliminary numbers for the Spurs/Cavs game four, which decided that series. The 5.2/14 is expected to rise because live programming is more volatile in preliminary numbers. For example, Sunday’s game five increased 33% between fast nationals and final numbers.

NBC (3.1/9) and Fox (3.1/9) tied for second, as NBC debuted the third season of “America’s Got Talent” (3.6/10). Tying this summer’s premiere numbers of “So You Think You Can Dance,” “Talent” fell 16% from last summer’s opener.

It should be noted that last year’s “Talent” opener faced weaker competition in the form of repeats and “The Alma Awards” on ABC. “Deal or No Deal” led in the night with a 2.1/7.

Fox’s “Moment of Truth” (2.4/8) held steady from last week, while “Hell’s Kitchen” (3.9/11) declined 7%, but still placed as the second-highest-rated show of the night.

CBS (1.3/4) ranked a solid fourth with “AFI’s 10 Top 10” (1.3/4), dropping 32% from last June’s “AFI” special.

The CW (0.5/1) placed fifth with repeats.