Editor's note: This is the fifth in a series of Rangers position breakdowns ahead of spring training. SportsDay Rangers insiders have already broken down the starting rotation, infield, outfield and catchers.
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The progress of Keone Kela. After an impressive rookie season, he dealt with bone spurs in his elbow that impacted his early-season performance. He returned after the All-Star break, but struggled with his command and never really recovered. His fastball, curveball combo give him closer stuff. If he rebounds, Kela and Matt Bush could team to be as dynamic a seventh- and eighth-inning combo in the league.