Another hefty showing by “American Idol” on Tuesday has given Fox its first reason to cheer in the May sweep, while NBC laffer “Frasier” picked up steam one week from its series finale.

Fox took the night in all key measures, according to Nielsen, powered by the weekly hourlong performance seg of “Idol” (9.0/27 in adults 18-49, 22.82 million viewers overall).

Although the music talent show has been performing at series-high levels this season, Tuesday’s showing marked one of the few times it has failed to match what it delivered a year ago in 18-49. It was down 7% in the demo despite being up 12% in total viewers.

Fox drama “24” also put up solid second-place numbers (4.8/12 in 18-49, 11.09m), opposed by tougher competish than usual from NBC comedies “Frasier” (5.3/14 in 18-49, 14.33m) and “Scrubs” (4.9/12 in 18-49, 11.11m).

“Frasier,” which calls it quits with an hourlong finale one week from tonight, ended its Tuesday run with the best scores since its season preem. And the season finale of “Scrubs” held 92% of that “Frasier” 18-49 aud and built on it by 18% among adults 18-34 (4.7/14 vs. 4.0/12).

NBC, second for the night and the only net up vs. the opening Tuesday last May, wrapped with a routine victory at 10 from “Law & Order: SVU” (5.3/14 in 18-49, 13.04m).

ABC was paced by “NYPD Blue” (3.5/9 in 18-49, 9.57m) and “Less Than Perfect” (3.5/9 in 18-49, 8.31m), which built on its “According to Jim” 18-49 lead-in (3.4/9) for the first time.

CBS was led by the best “Judging Amy” since Feb. 18 (3.0/8 in 18-49, 12.21m).