Not long ago, Trent Richardson was viewed as a cornerstone for Cleveland's future.

On Wednesday, he became part of its recent inglorious past.

The Browns traded the powerful running back to the Indianapolis Colts in a stunning move just two games into the season and one year after drafting Richardson in the first round.

On Thursday morning, the team tweeted a picture of Richardson, who will wear No. 34, at its team headquarters.

The trade was first reported by ESPN NFL Insider Adam Schefter.

Richardson told reporters Wednesday night that he wanted Browns fans, who he called "some of the best fans I've ever been around" to know "his first team will always be the Browns."

He said he learned of the trade when he got a phone call from a friend and he then turned on the radio to hear the news for himself.

"I can't believe it. I didn't see it coming anywhere. I guess it was the best move for the Browns," he said. "I wanted to be a Brown, I didn't see it coming but at the same time I'm a Colt now and have to get ready for Sunday's game."

Cleveland's new front office dealt Richardson for a first-round draft pick next year, when the team will have two opening-round selections and 10 overall. Cleveland is rebuilding again and the team hopes to use those picks -- seven in the first four rounds -- to help turn around a floundering franchise.

Such a reversal was what the Browns had in mind when they took Richardson with the third overall pick in 2011. The former Alabama standout seemed to have it all: power, speed and good hands.

But Richardson wasn't the type of back Cleveland's front office wanted or apparently suited first-year coach Rob Chudzinski's offense. Richardson, who rushed for 950 yards as a rookie despite playing most of last season with two broken ribs, gained just 105 yards on 31 carries in Cleveland's two losses this season.

He lacked the explosiveness the Browns' new regime is looking for, and it may not have helped that Richardson made it clear he wanted the ball more.

However, Browns CEO Joe Banner said there was nothing negative about Richardson and the team simply seized an opportunity to improve. And the Colts have been looking for a back since Vick Ballard suffered a season-ending knee injury during practice last week.

"This was more about the moment presented itself," Banner said, "and based on the situation the Colts found themselves in, it wasn't something where we could say, 'Can you wait three weeks to think about this or learn more?' We thought it was a move to make us better and we had to make that decision now. We decided to move forward."

Banner said the Browns' first conversation with the Colts about a deal for Richardson was Tuesday.

The shocking trade -- easily the biggest in Cleveland's expansion era and one of its most significant since the Browns joined the NFL in 1950 -- came on the same day Chudzinski announced third-string quarterback Brian Hoyer will start Sunday against the Minnesota Vikings. Hoyer got the surprising call over backup Jason Campbell to fill in for starter Brandon Weeden, who is sidelined with a sprained right thumb.

According to the Elias Sports Bureau, Richardson joins defensive lineman John Matuszak as the only players since the NFL merger in 1970 to be drafted within the top three, play their first season with the team that drafted them, and then play for another team the following season.

Elias also says that with Richardson joining Andrew Luck, the top overall pick in 2012, in Indy, it marks only the third time since the merger that two of the top three players from a draft class were on the same team within two seasons of being selected. The others: LaVar Arrington and Chris Samuels of the Washington Redskins and Steve Emtman and Quentin Coryatt of the Colts.

Colts owner Jim Irsay tweeted his excitement about the trade.

Building a MONSTER for the BEST fans in the WORLD!!!!!!!!!!!!!!!!!! — Jim Irsay (@JimIrsay) September 19, 2013

The Colts have been ravaged by injuries to starters over the past week, losing Ballard, guard Donald Thomas and tight end Dwayne Allen for the season.

"Since I've taken this job, [Irsay] has wanted to achieve greatness no matter the circumstances," Colts general manager Ryan Grigson said. "Losing three starters in one week, you can't let that affect your mindset."

Richardson will become the starter once he learns the offense. He'll team with Ahmad Bradshaw, the current starter, to give the Colts the backfield duo they envisioned with Bradshaw and Ballard before the latter was injured. But instead of them splitting the load 50-50, expect Richardson to get the majority of the carries as long as he remains healthy.

The double whammy floored many Browns fans, leaving some to wonder if the team was giving up on this season.

Banner denied that and said he understands the fans' suspicions.