Shohei Ohtani hit his first home run for the Los Angeles Dodgers on Wednesday, scoring his new team’s decisive final run with a seventh-inning solo shot in a 5-4 win over the San Francisco Giants. Ohtani belted Taylor Rogers’ 3-1 sinker over the right-center field fence with two outs at Dodger Stadium. The shot in his ninth game as a Dodger ended his longest home run drought at the start of a season in his seven-year MLB career. The 29-year-old, who joined the Dodgers on a record 10-year, $700 million contract during the offseason, has moved within three home runs of tying Hideki Matsui’s Japa…