The San Francisco Giants, who were plagued by injuries last season, have named Madison Bumgarner their opening-day starter on March 31 against the Arizona Diamondbacks. Bumgarner, now in his fifth year with the Giants, was 13-9 last season with a 2.77 earned-run-averageHe made 31 appearances last season, all of them starts. He had 199 strikeouts in 201 1/3 innings of work. He gave up 62 walks, and he gave up 62 earned runs, including 15 home runs.