SCOTTSDALE, Ariz. — A year ago, Landen Roupp entered camp in competition for the fifth spot in the Giants’ rotation with Hayden Birdsong and Landen Roupp — a spot he ended up winning. His spot in the rotation has long been secure, but Roupp isn’t changing anything ahead of his third major league season. “I’m just thinking of it the same way, trying to fight for my spot,” Roupp said. “Even if I do have the spot, I’m going to attack it like I don’t.” Roupp and left-hander Matt Gage threw their first live bullpens of camp on Saturday afternoon after right-handers Logan Webb and Hayden Birdsong...