Source: Orioles to promote Zach Britton

The Baltimore Orioles will promote left-hander Zach Britton to the major leagues, a source has confirmed to MLB Daily Dish. MASN.com's Steve Melewski was first to tweet that Britton was "expected to join" the Orioles' big league squad, and a source confirmed that he is indeed getting called up. The southpaw was scratched from his start at Triple-A Norfolk on Monday and will join the major league squad in Cleveland.

In six major league starts on the year, the 25-year old is 2-3 with a 4.76 ERA, 3.2 K/9 and 4.0 BB/9 in 34 innings of work. He has been slightly better with Norfolk, pitching to a 6-5 record and 4.27 ERA in 19 starts on the year.

Britton is the Orioles' third September callup, joining catchers Chris Snyder and Steve Clevenger. The team is expected to make more moves depending on if Norfolk makes the International League playoffs, which begin later in the week.

In 46 major league appearances (45 starts) over the last three seasons, Britton is 18-17 with a 4.74 ERA in 248.2 innings of work. The former top prospect has not yet lived up to expectations, but is still under team control through the 2017 season.