Beato was drafted by the Baltimore Orioles in the first round of the 2006 Major League Baseball Draft. in 2011. Going into the 2007 season, Beato was rated the 99th best prospect in baseball by Baseball America. He participated in the 2007 All-Star Futures Game.
New York Mets
In the 2010 Rule 5 Draft, Beato was selected by the New York Mets off of the Norfolk Tides roster. Beato was named to the Mets' Opening Day roster. He made his major league debut on April 1, 2011. In his first innings, Beato allowed no earned runs, setting the Mets franchise record for longest scoreless inning streak to start a career. In those innings, Beato allowed only nine hits and three walks.
During the 2012 season, the Mets traded Beato to the Boston Red Sox as the player to be named later in the trade that sent Kelly Shoppach to the Mets. He was designated for assignment by the Red Sox on December 19, 2012. Beato started the 2013 season on a minor league contract with the Triple-A Pawtucket Red Sox. His contract was selected from Pawtucket, and he was brought up to Boston on June 16, 2013. He was designated for assignment on October 23, 2013.
The Cincinnati Reds claimed Beato on October 31, 2013. The Reds designated Beato for assignment on March 30, 2014.
Atlanta Braves
The Atlanta Braves claimed Beato on April 2, 2014. They optioned him to Triple-A Gwinnett on April 9, after he made one appearance. In 24 games with Gwinnett, he was 1-0 with a 3.49 ERA. On June 17, he was recalled to replace David Carpenter, who went on the disabled list. Two days later, the same fate happened to him, as he was placed on the disabled list. He was outrighted off the Braves roster on July 11, 2014. In 3 appearances with Atlanta, Beato didn't give up a run in 4 innings. Beato elected free agency in October 2014.
Second stint with Baltimore
On March 3, 2015, Beato signed a minor league deal with the Orioles. He elected free agency on November 6. He resigned with the team after the 2015 season. He became a free agent after the 2016 season.
Philadelphia Phillies
On January 7, 2017, Beato signed a minor league contract with the Philadelphia Phillies. He was added to the team's 40-man roster on July 29 and debuted with the team that night, but exited the game with a hamstring injury and was placed on the ten-day disabled list the following day. He was designated for assignment on August 17, 2017. On December 22, 2017, Beato resigned with the Phillies to a minor league contract. He elected free agency on November 2, 2018. On March 5, 2019, Beato again re-signed to a minor league contract with the team. However, he was released on March 28, 2019.
