Two of baseball's top prospects find themselves thrust into the middle of one of the National League's hottest rivalries when the Los Angeles Dodgers and San Francisco Giants continue a four-game series Wednesday night. The Giants debuted Christian Arroyo, considered their shortstop of the future, at third base on Monday in a series-opening, 2-1 win. One day later, the Dodgers countered by promoting Cody Bellinger, projected as the franchise's future at first base, and thrust him immediately into the lineup in left field in a 2-1 win.