Hamilton drew a walk against Chicago starter Jake Arrieta to open the fourth, and broke for second on the first pitch to Brayan Pena. Second-base umpire Bill Miller called Hamilton safe. Cubs catcher Welington Castillo's throw to Javier Baez was high, and the shortstop made an acrobatic catch.
The review comfirmed the tag was in time.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.