Is it time to call up Ryan Rolison?

The Rockies starting rotation started off really well, helping steer the team to a hot 11-3 start. Germán Márquez, Jon Gray, Kyle Freeland, and Antonio Senzatela combined for 12 of the team’s first 14 starts and during that time, they combined for a 7-2 record and 2.54 ERA in 71 innings. They allowed 20 earned runs (23 total runs), 20 walks, and 55 strikeouts.

Since the torrid 11-3 start, the Rockies have gone just 9-19 and now sit at 20-22. Since August 9, the “four horsemen” have combined for a 5.55 ERA in 121 2⁄3 innings. Antonio Senzatela is the only starter with an ERA under 4 in that stretch. Jon Gray has also landed on the Injured List with right shoulder inflammation. Kyle Freeland…