This week, Major League Baseball will begin rolling out thousands of iBeacons in ballparks around the country according to a source familiar with the plans who shared them with MacRumors. The league is looking to have twenty parks outfitted with roughly 100 iBeacons each by Opening Day at the end of March. Boston, Milwaukee, San Diego, LA Dodgers, and San Francisco are among the teams that will have iBeacons installed. The iBeacon deployment is one of the largest rollouts in the world, aside from Apple Retail’s 254-store effort. MLB will be using iBeacons sourced from Qualcomm. The iBeacons will work with primarily with MLB’s At The Ballpark app, demonstrated at Citi Field last fall. The app should be updated by Opening Day with iBeacon support.