SAN DIEGO — The United States is headed to the World Baseball Classic semifinals. Giancarlo Stanton belted a go-ahead homer and Adam Jones made a catch for the ages, propelling the U.S. to its second semifinals appearance with a 6-3 win over the Dominican Republic on Saturday night in San Diego. The winner-take-all bout had a postseason-like atmosphere, with the sellout Petco Park crowd hanging on every pitch between two of the most star-studded rosters in the tournament. By defeating the defending champions, Team USA advances to join Puerto Rico, Japan and the Netherlands in Los Angeles. A semifinals matchup with unbeaten Japan looms Tuesday evening at 9 p.m. ET on MLB Network and MLB.TV.