"He's really smart," Senators coach D.J. Smith said of Pinto, who also had an assist. "He gets himself in shooting areas and just maneuvers his way around the ice. And then, clearly, he can really shoot it. Just really patient. Just smart. He's managing the game extremely well for a young guy (21 years old)."
Brady Tkachuk scored twice, and Anton Forsberg made 20 saves for Ottawa (3-2-0), which is 3-0-0 at home.
"[Pinto] just does a lot of the little things right," Tkachuk said. "I'd say a lot of it's coming off the forecheck for that line. They create a lot of momentum for us. He's getting rewarded right now, but it's all [because] of the hard work he's put in."
Dylan Guenther scored his first NHL goal, and Karel Vejmelka made 26 saves for Arizona (1-4-0).
"They were super stoked," Guenther, an Edmonton native, said of his teammates' reaction to his goal. "I think it's pretty cool when they're just as excited as you are.
"I grew up watching a lot of these guys play. [Zack] Kassian played in Edmonton, and they had some playoff runs, and I remember watching him, 2017 especially. So it's pretty cool that you get to share that moment with him and get to know him on a personal level."
Pinto gave the Senators a 1-0 lead 4:40 into the first period with a snap shot from the slot into the top left corner.
Josh Norris tipped a point shot from Sanderson to make it 2-0 at 6:17.