SAN FRANCISCO (AP) — Bruce Bochy just went for it and pegged Joe Panik as a 60-home run guy. Joking of course, but the second baseman is on quite a pace.His latest solo home run wasn’t enough against Seattle.Mitch Haniger hit a two-run single, Kyle Seager also singled in a run in a big first inning, and the Mariners spoiled the Giants’ home opener with a 6-4 win Tuesday.Panik went deep in the fourth, his third solo drive of the season. At that point, he had accounted for all three of San Francisco’s runs for the season with those shots.At this rate, the Giants might need him to hit 60 just to stay competitive.“All I can do is laugh about that one,” Panik said of Bochy’s bold prediction.Marco Gonzales (1-0) allowed three runs and six hits in 6 1/3 innings for the Mariners.Evan Longoria added a two-run shot for the Giants, the first hit with his new team after an 0-for-17 start.Behind Panik’s power bat, San Francisco became the first team in major league history to score its first three runs of the year on solo homers by the same player, according to Elias.