The Texas Rangers face an uphill climb to get into the postseason, but their new pitcher holds the key to their success this season.

Ahead of Tuesday’s game, the Rangers received news on Evan Carter, who was placed on the 10-day injured list in early August due to back spasms—his second stint with the same injury this year.

DeScalfani began his D-backs tenure in long relief, and is still working up his pitch counts. Efficiency will be of the utmost importance with a somewhat tired bullpen behind him. Quick, early outs ...