Eflin has earned an invitation to spring training.
The 21-year-old spent all of 2014 with Double-A Reading, posting a solid 3.69 ERA and 1.21 WHIP with 68 strikeouts over 131.2 innings with the club. As a reward, he'll get his first taste of the majors during spring training, but he'll almost certainly begin the season in Double-A or Triple-A again this season.