ROME—Holger Rune followed up his latest victory over Novak Djokovic with another impressive performance, rallying for a 6–7 (2), 6–4, 6–2 win over fellow Scandinavian Casper Ruud on Saturday to reach the Italian Open final. It’s the third clay-court final this season for Rune, after the 20-year-old Dane won a title in Munich, Germany, and…