Diamondbacks manager Chip Hale has named his Opening Day starter, Josh Collmenter, but has yet to unveil the rest of his starting rotation. Because Collmenter and another starter, Jeremy Hellickson, have similar styles, Hale is considering Rubby De La Rosa as the No. 2 when the season begins, reports MLB.com.

"We are in serious discussion about doing something like that," Hale said.

De La Rosa has a 3.75 ERA in four appearances this spring. He's recorded 11 strikeouts with five earned runs allowed in 12 innings pitched.