Weathers is expected to be optioned to Triple-A El Paso or move to the bullpen if Jake Arrieta (hamstring) is cleared to return from the 10-day injured list during this weekend's series with the Astros, Kevin Acee of The San Diego Union-Tribune reports.

After a strong start to the season, the 21-year-old lefty has looked the part of one of the majors' youngest pitchers since late July. In his last six outings, Weathers has been lit up for 31 earned runs -- including 11 home runs -- in 20.2 innings. Due to the Padres' dwindling rotation depth, Weathers has been forced to take his lumps at the big-league level, but Chris Paddack (oblique) is set to return from the IL on Monday, and Arrieta should be back a few days later. Those impending additions will give the Padres a full five-man rotation for the first time in weeks.