ATLANTA - Mets pitching coach Dan Warthen rejoined the club Friday after spending the night in a local hospital with an accelerated heartbeat.

According to a team spokesman, the condition stabilized overnight, allowing Warthen to resume his duties.

"He does an outstanding job at getting our guys ready," manager Terry Collins said. "And with all that's going on right now with our pitching, and with all the juggling we've got to do and everything else, I need him here. So I'm glad he's back."

Indeed, the Mets will spend the remainder of the season walking a fine line, looking to manage the workloads of their young starters and also trying to finish off their run toward the NL East crown.

Part of that effort has involved limiting Noah Syndergaard, who returns to the mound Saturday after a 12-day layoff. Though he has not pitched since Aug. 30, Collins said he's not worried about rust.

"I think he understands what he's got to do here," he said. "Did he need the rest? I'm not really sure. But he's a pretty big, strong guy."

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With the Mets in a six-man rotation, Collins said Syndergaard shouldn't require another hiatus during the regular season.

Syndergaard (8-6, 3.31 ERA) has logged 152 innings combined between Triple-A Las Vegas and the big leagues. He threw 133 innings in 2014.

Day of remembrance

In keeping with 9/11 tradition, Mets players and coaches wore first responder caps during batting practice.

The Braves also played a video retrospective of the Mets-Braves matchup at Shea Stadium -- 10 days after the attacks -- that featured Mike Piazza's iconic eighth-inning homer.

Mets videos

"They won that game," Braves president John Schuerholz said on the video. "And that's the way it should have been."