"Until we know something definite, I'll be thinking about him," Narron said Friday after the Reds first baseman was briefly knocked unconscious in a collision during an 8-2 victory.
Casey, a Pittsburgh native, sustained a concussion, the Reds said during the second game. A CT scan at a Pittsburgh hospital was normal, and Casey was experiencing a headache and neck soreness.
Casey was taken from the field on a stretcher after being accidentally struck under the right eye by the forearm of Humberto Cota at first base in the seventh inning.
"Maybe I care about these guys too much, but I sure don't want to see anybody get hurt," Narron said. "He's got a lot of family here. I know we had guys on the field trying to get to them, to tell them he was OK. It's got to be scary to see your son put on a stretcher and taken off, not really knowing."
Felipe Lopez went 5-for-5, stole two bases and drove in two runs for the Reds. He capped his first career five-hit game with a single off reliever Josh Fogg in the ninth inning that scored Ryan Freel, who was hit by a pitch to start the inning.
Zach Duke (6-1), making his first start since spraining his left ankle running the bases Aug. 23, allowed one run and five hits over four innings. He struck out four and walked two.
The rookie was attempting to become the first major-league starter to begin his career 7-0 since San Francisco's Noah Lowry won his last six decisions in 2004 and his first this season.
"He threw 74 pitches and hadn't pitched in a while, so we just decided to be careful with it," Pirates interim manager Pete Mackanin said. "Not that I wanted to, because we need pitchers to go late in the game. I thought he was pretty good. He had more pitches early than he probably wanted, but he looked very good for a guy who hasn't pitched in three weeks."
Brandon Claussen (10-9) allowed one run in seven innings to earn his sixth win in seven decisions. He allowed six hits, struck out six and walked two, allowing only one runner to reach third base before leaving the game after allowing a leadoff walk to pinch-hitter J.J. Furmaniak in the eighth.
Lopez's two-out double to left field off reliever Rick White scored Edwin Encarnacion in the seventh for a 3-0 lead. Chris Denorfia, who took Casey's spot in the lineup, singled and scored on Encarnacion's two-out single to left off reliever Matt Capps to make it 4-0.
Adam Dunn's second RBI of the game, a one-out sacrifice fly, scored Freel and gave Cincinnati a 2-0 lead in the fifth inning. Freel reached on an error by reliever Brian Meadows and moved to third on a single by Lopez.
Claussen helped the Reds to a 1-0 lead in the third inning with a leadoff infield single. He advanced to third on singles by Freel and Lopez and scored when Duke walked Dunn. Casey bounced into a double play to end the inning.
- The doubleheader was made necessary by an Aug. 29 rainout
- Lopez is the first Reds player to get five hits in a game since Casey did so in New York against the Mets on May 18
- Freel's third-inning single snapped an 0-for-12 slump
- The Reds have lost only two of their last 11 road series
- Kearns rejoined the Reds after missing two games for the birth of his son
- Pittsburgh started an eight-game homestand.