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8/24/2014 4:34 P.M. ET

Realmuto builds case for September callup

DENVER -- Double-A Jacksonville catcher J.T. Realmuto continued his September callup campaign Saturday by finishing 1-for-4 with two walks, three RBIs and his eighth home run of the season.

Realmuto, the Marlins' No. 7 prospect according to MLB.com, has had two brief stints with the big league club this season, going 4-for-20 with five RBIs in seven games. But the former high school quarterback has made huge offensive strides at the Double-A level this season, raising his average from .239 in 2013 to .298 this year.

On Friday, Marlins manager Mike Redmond singled out catcher as one of the positions Miami wants to bolster when the rosters expand in September. And considering the Marlins' willingness to let him jump Triple-A twice this season, Realmuto seems like a prime callup candidate.

Through 90 games, Realmuto's 61 RBIs, 61 runs, five triples and 17 stolen bases lead all Southern League catchers.

Cishek seeks to right ship amid August troubles

DENVER -- Sometimes, one wrong pitch to the right batter is all it takes to flip the entire perception of a player.

Right-hander Steve Cishek entered Saturday having allowed five earned runs in seven August opportunities. But because he had managed to convert all four of his save opportunities this month and 11 consecutive overall, Cishek's struggles were looked at as more of a rough patch than any serious cause for concern.

That all changed when he left a ball in Corey Dickerson's sweet spot to blow his fourth save Saturday.

"He yanked it," manager Mike Redmond said of Cishek's pitch to Dickerson. "I actually thought his last couple [appearances] have been pretty crisp. … But it probably got to him a little bit, giving him up the home run."

With a chance to move the Marlins to two games over .500 for the first time since June 17, Cishek was disappointed.

"These are all must wins, and when you're trying to climb back in this thing and have a team on the ropes, you should be able to put them away," Cishek said. "Unfortunately, I left a good pitch to hit to a pure fastball hitter and he got all of it."

Even with a slider he described as "a cement-mixer," Cishek said Saturday was the best he's felt "in a long time."

The Marlins offense gave Cishek a break in Friday's series opener by producing 13 runs, but despite not pitching since Tuesday, he couldn't find a way to turn a corner. And after Saturday's outing, opponents are now hitting .417 against him with four walks this month.

"I don't really have an explanation for what's going on," Cishek said. "It's just a fact that I need be able to locate my pitches better, get ahead of hitters and attack like I did earlier in the year."

Cody Ulm is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.