May 25, 2013

Orioles  place Pedro Strop on the injured list

June 14, 2013

Orioles  sign Steven Brault

Orioles  sign Jimmy Yacabonis

June 19, 2013

Orioles  sign Trey Mancini

Orioles  sign Austin Wynns

June 20, 2013

Orioles  sign Chance Sisco

June 25, 2013

Orioles  sign Hunter Harvey

June 26, 2013

Orioles  sign Jonah Heim

June 27, 2013

Orioles  sign Mike Yastrzemski

July 02, 2013

July 04, 2013

Orioles  sign Stephen Tarpley

July 12, 2013

Orioles  sign Stefan Crichton

July 31, 2013

Josh Hader traded from Orioles  to Astros 

September 25, 2013

Orioles  place Manny Machado on the injured list

November 25, 2013

Brad Brach traded from Padres  to Orioles