Arenado committed another error on a routine backhand attempt to let a run score in the eighth, as well. It was just the second career two-error game for Arenado, who has two Rawlings Gold Glove Awards, one for each season in the Majors. Arenado's other two-error game occurred June 14 at Miami.
Thursday -- which dropped the Rockies to 2-5 on the current 10-game road trip, and left them 52-100 all-time at Chase Field -- goes into the those-things-happen category. Arenado took an ice bath after the game, but was clearly steamed. "Terrible" was how he described the performance.
"I'll go to bed not happy, but I'll wake up ready to go tomorrow," Arenado said. "It's frustrating. He [Rusin] pitched a great game. Whenever our pitchers pitch a great game, I make sure I remind myself, 'Let's pick this guy up.'
"I didn't pick up 'Russ' today, so I'm not happy."
Rockies manager Walt Weiss said Arenado is "as good as it gets, so I'm not too worried about him."
The first one took an odd final hop, but Arernado read it. He said he wasn't sure how the ball popped out of his glove, and the replay board didn't give him an answer. The other was every bit as inexplicable.
"Both those plays weren't hard," he said.
Rusin, who went six innings with just one of the three runs off him being earned, was upset over his hanging breaking ball to A.J. Pollock for a leadoff homer in the sixth and the inside fastball that Peralta pulled down the right-field line after the error. He wasn't mad at all at Arenado.
"I tried to pick Nolan up because he picks us up every day with the plays he makes," Rusin said. "It's just frustrating that I couldn't pick him up in that situation."
Thomas Harding is a reporter for MLB.com. Follow him on Twitter @harding_at_mlb, and like his Facebook page. This story was not subject to the approval of Major League Baseball or its clubs.