Martin Prado didn’t expect Frank Wren to call last week, so he was surprised to hear the Braves general manager explain that he’d been traded to Arizona for Justin Upton. But now that he’s had a week to adjust to the chance, Prado says he’s happy to be on board with the Diamondbacks. Yesterday the sides agreed to a four-year, $40MM contract extension, so he can expect to be in Arizona for a while.

“Since I got to the big leagues I’ve been looking to be secure, to be in the right spot and not have to worry about going to free agency” he said on a conference call with reporters yesterday afternoon. “The way I am right now I’m happy.”

Prado’s deal covers his final arbitration season and delays his free agency by three years. The versatile 29-year-old said he has heard good things about the Diamondbacks and was comfortable accepting the deal before playing his first game with the the team. Arizona will use him at third base after sending Chris Johnson to Atlanta in the Upton deal.

The Braves generated considerable excitement with the trade, which places Upton alongside his older brother B.J. in Atlanta’s outfield. While Wren said giving up Prado “was the most difficult part” of the deal, some have said the Diamondbacks didn’t get enough in return. Prado acknowledged that Upton is a “superstar caliber” player and said both teams stand to benefit from the deal. But he certainly doesn’t expect it’ll look lopsided in the future.

"Maybe in a couple of years, people will think a different way," he said.