Padres farm director Randy Smith tells me that Casey Kelly, recovered from an elbow injury, is to pitch Monday in a rookie league game in Arizona.
Kelly hasn't pitched since early April. Several publications rated the 21-year-old a top-100 prospect entering this season. A strained elbow ligament halted his fast start -- 2.25 ERA, 14 strikeouts, no walks over 12 innings with Triple-A Tucson.
For all the elbow injuries suffered this year by Padres pitching prospects, Kelly's was unique because the Padres associated it with too many curveballs. I'll have more details in my Baseball America report, but Josh Byrnes told me Kelly, in his final outing before being shut down, threw more curveballs than he ever had. "We have discussed it internally in an effort to prevent that type of outing from happening again," Byrnes said.