Dan Hayes tweeted not too long ago that top pitching prospect Casey Kelly is scheduled to have an MRI on his throwing elbow after he had reported soreness during his last start on Wednesday. For those who don't know, Kelly was off to a fantastic start in Tucson so far this year. SSS applies but several scouts who were perviously down on Kelly have raved about him recently after seeing him this year. Over the winter the Padres' had made small changes to Kelly's delivery and his fastball has reportedly touched 96mph this year, though it typically sits in the low - mid 90s. Pitching line at Tucson: 2 GS, 2.25 ERA, 1.60 FIP, 12 IP, 14 K, 0 BB, 3 ER, 52% GB%, 0 HR