While trying to remain optimistic about Lopez's injury, a look at FanGraphs injury report of pitchers with lat injuries indicates a minimum of 6 weeks before even starting a rehab assignment, so best case scenario we're looking at an early August return.
SWR pitched last night, he got knocked around a little, and, as of now, Festa is scheduled to pitch today. Maybe fly Festa out to Sacramento to take tomorrow's start, allowing Ober, Paddack, and Ryan to pitch the Toronto series on an extra days rest.