Kevin Newman and Lourdes Gurriel Jr. each hit two-run doubles and the Arizona Diamondbacks stretched their winning streak to four games with an 8-5 victory over the slumping San Francisco Giants on Tuesday night. "This isn't anything that is happening by luck — we've been working our butt off to make this moment happen," Diamondbacks manager Torey Lovullo said. Arizona received some shocking news earlier in the day, learning reliever Andrew Saalfrank was among five players sanctioned by Major League Baseball for betting on games.