"American Idol" had the most viewers Thursday, but "Grey's Anatomy" had more young adults.

The NCAA Tournament games, spread across CBS and TBS, probably had the most talk.

"Idol" was the most-watched show nationally and locally. The Fox singing contest averaged 11.4 million viewers for its 450th episode, according to updated ratings. (The comparable show last season had 15.9 million viewers.) Judge Keith Urban performed, and Devin Velez was ejected.

ABC had a good night with "Grey's" (9 million viewers) and "Scandal" (8 million). "Grey's" scored a 2.9 rating in the 18-to-49 age group, edging "Idol" with a 2.8. Last year, the comparable "Idol" had a 4.4 rating in the age group.

The prime-time averages: Fox with 7.6 million total viewers, ABC with 7.1 million, CBS with 6.8 million for NCAA games, NBC with 2.6 million and The CW with 2 million. CBS and ABC tied for leadership  in the 18-to-49 age group.

Turner Sports and CBS Sports said Thursday's games averaged 10.4 million viewers, up 4 percent from last year.  

Other programs of note: "Wife Swap" started ABC's evening with 4.2 million viewers. The season finale of "Raising Hope" drew 3.7 million to Fox. A rerun of "Law & Order: SVU" was NBC's best with 4 million. "The Vampire Diaries" attracted 2.5 million.

In Orlando ratings, "American Idol" drew 184,000 viewers. "Scandal" pulled in 131,100. "Grey's Anatomy" was the stop for 124,800. Then came the NCAA. The Syracuse-Indiana game on CBS pulling in 96,200 viewers. The Marquette-Miami game on CBS averaged 92,700. The TBS games were down the list: Ohio State-Arizona with 45,100 viewers and Wichita State-La Salle with 34,700.