There seem to 6 top candidates for the Rangers fifth spot in the rotation. Those candidates are, in no particular order:
1) Jamey Wright
2) Bruce Chen
3) Kameron Loe
4) Josh Rupe
5) Edinson Volquez
6) John Koronka
Here is how they have fared so far this spring:
Wright: 1 GP, 1 GS, 0-1, 2 IP - 1 H - 2 R - 1 BB - 1 K - 0.00 ERA
Chen: 1 GP, 2 IP - 1 K - 0.00 ERA
Loe: 1 GP, 1 GS, 2 IP - 1 H - 0.00 ERA
Rupe: 1 GP, 2 IP - 1 H - 1 BB - 1 K - 0.00 ERA
Volquez: 2 GP, 2.2 IP - 3 BB - 1 HBP - 0.00 ERA
Koronka: 1 GP, 1.1 IP - 6 H - 6 R - 6 ER - 1 HR - 1 HBP - 40.50 ERA
I personally would like to see either Kam Loe or Volquez get the 5th spot. Loe definately showed starter potential last season. Volquez did struggle but he had his moments.