 PHOENIX It’s hot here. Really hot. Like, it’s going to be 110 degrees today.
 But the stadium formerly known as Bank One Ballpark was built with the Arizona summer in mind. So on Friday night, while the temperature outside remained in triple digits, the Diamondbacks and Nationals were still able to play under the stars. How? They closed the retractable roof several hours before gametime, cranked up the AC to full blast, and then re-opened the roof at gametime.
 The temperature inside as Livan Hernandez delivered his first pitch: a comfortable 79 degrees.
OVERHEARD
“He’s been a totally different player since the All-Star break. He’s been swinging the bat the way he’s capable of.”
Manny Acta, on shortstop Felipe Lopez, who is hitting .284 with a .365 on-base percentage over the last month
TODAY’S GAME
Nationals LHP Mike Bacsik (5-6, 4.47) vs. Diamondbacks RHP Micah Owings (5-6, 4.96), 4:40 p.m., MASN2, AM-1500, FM-107.7.
Mark Zuckerman
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