In this photo provided by NBC, Jimmy Fallon appears with former New York City Mayor Rudy Giuliani, right, during his "The Tonight Show" debut on
In this photo provided by NBC, Jimmy Fallon appears with former New York City Mayor Rudy Giuliani, right, during his "The Tonight Show" debut on Monday, Feb. 17, 2014, in New York. (AP Photo/NBC, Lloyd Bishop)

Jimmy Fallon's start as host of "The Tonight Show" is a ratings winner for NBC.

Nielsen company figures released Tuesday show 11.3 million people tuned in to watch Fallon's New York debut on Monday night.

It was the second-biggest audience for "Tonight" since May 2009, when Jay Leno stepped down for Conan O'Brien's brief run as host.

Fallon's "Tonight" debut fell short of the 14.6 million who tuned in Feb. 6 to see Leno sign off, again, after 22 years as host in Burbank.

Enjoying a post-Winter Olympics time slot, Fallon drew 2 million-plus viewers more than O'Brien's June 2009 "Tonight" opening audience of nearly 9.2 million.

NBC says Fallon's "Tonight" debut, with guests Will Smith and U2, was up 71 percent over his Feb. 6 "Late Night" farewell's audience of 6.6 million,

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In this photo provided by NBC, Jimmy Fallon appears with Joan Rivers, right, during his "The Tonight Show" debut on Monday, Feb. 17, 2014, in New
In this photo provided by NBC, Jimmy Fallon appears with Joan Rivers, right, during his "The Tonight Show" debut on Monday, Feb. 17, 2014, in New York. Fallon departed from the network's Late Night on Feb. 7, 2014, after five years as host, and is now the host of The Tonight Show. Rivers appeared on the show after 49 years earlier to the day, the veteran comedian had made her first appearance on "The Tonight Show Starring Johnny Carson" in that very studio, and had not appeared on "Tonight" since 1987, when she was banned by Carson after jumping to Fox to host her own short-lived show. (AP Photo/NBC, Lloyd Bishop)