Valencia, 29, split 117 games between Baltimore and Triple-A Norfolk last season, being recalled to the Major Leagues on May 19. In 170 plate appearances last year for the O's, he had a .304/.330/.553 slash line to go with eight homers. The 29-year-old has seen scattered MLB action since a mediocre stint as the Twins' everyday third bagger in 2011, however. Valencia has spent parts of four seasons in the Major Leagues with Minnesota (2010-12), Boston (2012) and Baltimore (2013).
Lough, 27, hit .286/.311/.413 in 96 games for Kansas City in 2013, playing all three outfield positions. He finished eighth in the AL Rookie of the Year balloting and led all rookies in WAR, as noted by the O's press release. The outfielder also finished the season with a stellar 27.3 UZR/150 rating, good for sixth amongst all outfielders in baseball.