Andrew Luck is Colts' pick

INDIANAPOLIS -- It's official: Andrew Luck will be the No. 1 choice in Thursday night's NFL draft.

Rather than keeping the NFL's worst-kept secret under wraps until Luck's name rolled off the lips of commissioner Roger Goodell, general manager Ryan Grigson decided there was no reason to delay the inevitable: Luck will become the successor to Peyton Manning as Indianapolis' quarterback and the new face of the franchise.

"We didn't see the point in prolonging what the world already knows," Grigson told reporters Tuesday after a voluntary minicamp workout. "It's about Andrew and we wanted to do the right thing by him."

The decision is no surprise. Last Wednesday, Grigson said the Colts had made a decision about whom to take with the first choice but declined to say whether it would be Luck, the Heisman Trophy runner-up, or Robert Griffin III, the Heisman winner.

But league sources told ESPN NFL Insider Adam Schefter that the Colts had informed Luck he would be their choice to succeed Manning.

The Washington Redskins will take Griffin III with the No. 2 pick in the draft, according to league sources.

And the Minnesota Vikings, picking at No. 3 overall, have reportedly narrowed down their list of choices to three players: USC left tackle Matt Kalil, LSU cornerback Morris Claiborne and Oklahoma State wide receiver Justin Blackmon.

Grigson said last week that the team made its decision a couple of weeks earlier and that was one reason the Colts didn't have Griffin come to Indy for an interview.

The Stanford quarterback plans to have his entire family in New York on draft night. He'll fly to Indianapolis on Friday, where he will take questions from local reporters and then meet fans at Lucas Oil Stadium, his new home field.

Colts coach Chuck Pagano said Luck will join the team's offseason conditioning program after his June 17 graduation.

"I've got his number now. I've been waiting to give him a call until everything else was figured out," said quarterback Drew Stanton, whom the Colts acquired in a trade with the New York Jets last month. "Try and do that and reach out to him and let him know I'm going to be every bit of a resource that I can for him."

Stanton and Trevor Vittatoe are the only quarterbacks currently on Indy's roster, something that will change Thursday night.

But that's not the reason Grigson made the impromptu announcement Tuesday.

"Really, on behalf the kid, you try to make things a little bit easier on his part. Go ahead and make the decision. Go ahead get it out there officially that he's our guy," Pagano said. "The intangibles are off the chart. You know the skill set. You've seen his body of work. He's a gym rat. He's a football junkie. He's big. He's strong. He's physical. He can make every throw out there. He's a great leader in his own way."

The Colts have not had the first pick in the draft since 1998, when they selected Manning.

They will also have the final pick Thursday night, marking the first time a non-expansion team has had both the first and last pick in a draft since 1967. The then-expansion Houston Texans also had the first and last pick in 2002.

Information from ESPN NFL Insider Adam Schefter and The Associated Press contributed to this report.