#DCWeek: 'Supergirl,' 'The Flash,' 'Arrow' & 'Legends of Tomorrow' 4-night crossover scores for CW

'Supergirl' delivers the network's most watched Monday in almost 7 years

'The Flash' races to its most watched episode in two years

'Arrow' shoots to season highs

'DC's Legends Of Tomorrow' hits series highs

The DC "Heroes vs. Aliens" crossover event, with "Supergirl," "The Flash," "Arrow," and "DC's Legends Of Tomorrow" meeting in an epic, four-night adventure, delivered season highs for all four series each night, with all four shows seeing their most watched episodes of the season.

"The Flash" raced to its largest audience in two years, and "The Flash" and "Arrow" both hit season highs in adults 18-34 and adults 18-49 along with "Legends."

"Supergirl" kicked off The CW's four-night event. The CW had its most watched Monday night (2.37 million) in nearly seven years, according to preliminary fast affiliate ratings from Nielsen Media Research.

"Supergirl" had its most watched (3.5M) episode of the season, and it was The CW's most watched telecast of any series thus far this season. "Supergirl" matched its season premiere ratings in both adults 18-34 (0.9/4) and adults 18-49 (1.1/4).

"Supergirl" was No. 2 in the 8-9 p.m. hour in adults 18-34, and matched FOX in adults 18-49. "Supergirl" was The CW's most watched show in its Monday 8-9 p.m. time period in more than eight years.

On Tuesday, "The Flash" raced to its most watched episode (4.09M) in almost two years, and its highest rated episode of the season, according to preliminary fast affiliate ratings from Nielsen Media Research.

"The Flash" drew a 1.2/5 in adults 18-34, its best rating in that demo since May 10, and a 1.5/5 in adults 18-49, its best since Feb. 16.

"The Flash" was up 3 percent in total viewers from last year's crossover episode, 7 percent in adults 18-49, and matched its rating in adults 18-34.

"The Flash" ranked No. 2 in the 8-9 p.m. hour in adults 18-34, No. 3 (tie) in adults 18-49, and No. 1 in men 18-34 (1.4/7).

Versus last week's episode, "The Flash" was up 39 percent in total viewers, 50 percent in adults 18-34, 36 percent in adults 18-49 and 75 percent in men 18-34.

For the night, The CW's Tuesday was up 37 percent in total viewers (2.576M), 60 percent in adults 18-34 (0.8/3), and 29 percent in adults 18-49 (0.9/3). It was The CW's most watched Tuesday since Feb. 23.

"The Flash" is also one of the most heavily time-shifted shows on broadcast television. This season it's averaging a 79 percent increase in adults 18-49 in Live + 7 Day delayed viewing over its Live + Same Day totals, a 72 percent jump in adults 18-34, and a 69 percent gain in total viewers.

On Wednesday, the 100th episode of "Arrow" hit its mark, delivering the series' most watched (3.52M) and highest-rated episode since last season's crossover episode, according to preliminary fast affiliate ratings from Nielsen Media Research.

"Arrow" more than doubled its rating in adults 18-34 (1.1/5) from last week, up 120 percent from its last original episode, and matching last season's crossover rating.

"Arrow" drew a 1.3/5 in adults 18-49, up 86 percent from its last original episode and off only a tenth from the crossover last season.

"Arrow" tied for No. 1 in the hour in adults 18-34, and was No. 1 in men 18-34 (1.3/6), and tied for No. 2 in men 18-49 (1.5/6).

This was The CW's most watched Wednesday night (2.3M) since Jan. 27, and its highest-rated Wednesday in adults 18-34 (0.7/3) since Feb. 24, and since May 25 in adults 18-49 (0.8/3).

This season, "Arrow" is averaging gains of 77 percent in adults 18-49, 69 percent in adults 18-34, and 61 percent in total viewers in Live + 7 Day delayed viewing over its Live + Same Day totals alone.

"DC's Legends Of Tomorrow" had its most watched episode ever (3.33M) on Thursday, and its highest-rated episode ever in adults 18-34 (1.0/4) with the DC crossover week finale, according to preliminary fast affiliate ratings from Nielsen Media Research.

"Legends" also matched its second-highest rating ever in adults 18-49 (1.1/4), its best in that demo since its second episode on Jan. 28. It was "Legends' " highest-rated episode ever in men 18-34 (1.2/6) and tied its best rating ever in men 18-49 (1.4/5).

"Legends" was up 80 percent week to week in total viewers, 67 percent in adults 18-34, and 83 percent in adults 18-49.

"Legends" ranked No. 3 in the hour in adults 18-34, ahead of ABC and FOX, and outrated FOX in both adults18-49 and total viewers.

"Legends" delivered a five-year high in the time period in total viewers, and a two-year high in adults 18-34.

This season to date, "Legends" is seeing significant amounts of time-shifting, averaging a 58 percent gain in total viewers, a 63 percent boost in adults 18-34, and is up 73 percent in adults 18-49 in Live + 7 Day delayed viewing versus its Live + Same Day ratings.