According to the beats and TR, Rangers prospect Luke Jackson has been called up from AAA along with Anthony Bass to augment the bullpen. Alex Claudio and Phil Klein were sent down to make room.
LuJax slotted in at 10 in the mid season Community Prospect rankings and will be making his major league debut this weekend. He has pitched out of the pen in AAA since May 8th and has posted a 3.11 ERA with 54 K and 17 BB in 37.2 innings as a reliever.