"I'm just as surprised as anyone else," Bennett said.
There was suspense right until the end, either because the Cavs were unsure who they wanted or were trying to trade the pick. Most predictions had them taking one of the big men, with Noel largely considered the favorite for the No. 1 choice even after a torn ACL that ended his lone season at Kentucky in February.
"I thought everything was in the air, so I wasn't thinking I was the No. 1 pick," Noel said.
Stern, booed heavily in his final draft, added to the surprise of the moment by pausing slightly before announcing the Cavs' pick, their first at No. 1 since taking All-Star Kyrie Irving in 2011.
Orlando passed on both of the big men, too, going with Indiana swingman Victor Oladipo with the No. 2 pick. Washington took Otto Porter Jr. with the third pick, keeping the Georgetown star in town.
Ten years after the Cavaliers selected LeBron James to start a draft that included future NBA championship teammates Dwyane Wade and Chris Bosh in the top five, this one lacked star power and perhaps even the promise of stardom.
Bennett, Noel and Len are all coming off injuries and couldn't even work out for teams, but the Cavs decided Bennett's shoulder surgery wasn't enough cause for concern.
Len walked up to meet Stern and collect his orange Suns hat, then sat down near the stage to put on the walking boot he needs for the stress fracture of his left ankle that was discovered after Maryland's season.
Noel finally went to New Orleans with the next pick. He didn't seem upset at his fall down the draft board, hugging his mother and shaking hands with Kentucky coach John Calipari.
It was a good start to the night for the Hoosiers, with Cody Zeller going to the Charlotte Bobcats two places after Oladipo.