Rivals are wondering why 24-year-old Justin Upton, signed through 2015 with a limited no-trade clause and coming off an MVP-type season, is available, writes ESPN's Buster Olney, in his latest Insider-only column.

  • There's concern about whether Upton has recovered from a slight tear in the labrum of his left shoulder, an injury that dates to 2006. It caused Upton to miss time in September 2010. 
  • The Diamondbacks are looking for help at third base, thanks to Ryan Roberts' .639 OPS, but the market is thin at the position. 
  • If the Brewers trade Zack Greinke, and the Orioles are one of the top bidders, how Milwaukee views Brian Matusz will determine if a deal can be made without including Dylan Bundy and Manny Machado, who are Baltimore's top prospects. 
  • Giancarlo Stanton will be out four to six weeks after knee surgery. The procedure was successful, reports MLB.com's Joe Frisaro. 
  • The Phillies have lost three in a row, and nine of their last 10 entering Sunday's game against the Braves. As it becomes more and more apparent that they're sellers at the deadline, they'll listen offers for Cole Hamels.