The Warriors wobbled into Cleveland on Saturday and, for the first time this season, summoned the kind of performance that delivers a warm cup of encouragement to everyone on the payroll.Coming off a distasteful loss Thursday night in Philadelphia, they vanquished a quality opponent, on the road, without the services of Stephen Curry, Draymond Green, Jimmy Butler III and Al Horford.The Warriors’ 99-94 victory over the Cleveland Cavaliers was accomplished behind the horsepower of a patchwork starting lineup, their 12th of the season, and a rotation that mostly made sense even if at times it looked as if the names were drawn from a hat.No one was more vital to this stunning triumph than Pat Spencer, the Bay Area’s latest unlikely superhero. The two-way guard, making his first NBA start, submitted something of a movie trailer for his own Linsanity moment.Spencer this week has moved from reliable part-time energizer to critical component of the Warriors. He is vastly outplaying his two-way contract.“We’ve seen the competitiveness,” Kerr told reporters at Rocket Arena. “We’ve seen what a good player he is over the past couple years. But...