Seguin, naturally, is center of attention

“He went back home for the weekend,’’ said Bruins general manager Peter Chiarelli, following his club’s morning and afternoon workout sessions on Causeway Street. “We let him go back. He’ll be back at the beginning of the week.’’

Chiarelli disclosed Friday that Savard, whom he attempted to trade over the summer after drafting prized prospect Tyler Seguin, is suffering again with postconcussion syndrome, something that flared up a few weeks into the club’s four-month summer respite.

Just when Savard returns to the pivot is anyone’s guess, because that’s the nature of brain injuries and PCS. Sure, circle a date on the calendar, if that makes you feel better. But it’s usually a waste of time and often only adds to the frustration of an oft-maddening, sometimes frightening, condition.

“He is in good spirits,’’ noted Chiarelli. “And he met with a few of the players [Friday]. I would say it’s a little more than day to day, but we are tracking it well.’’

Meanwhile, a few hundred fans drifted in and out of the ever-chilly Vault, snatching glimpses of veterans and wanna-B’s over the course of four-plus hours. Much of the crowd’s attention was trained on the speedy, darting Seguin, who skated in the second session, riding much of the time on a line that had him flanked by Jeff LoVecchio and Mark Recchi. Seguin was slated to open the camp as a winger, but Savard’s lapse of health turned into a front-and-center audition for the talented 18-year-old.

Day One among the big boys showed Seguin to be fast (no surprise) and with a quick release (yet another trademark of his outstanding junior career). Coach Claude Julien had him riding with Recchi, perhaps the most respected veteran in the entire Original 30, as a means of providing both a cultivating and welcoming environment.

“The way he feels and the way he acts when he is on the ice,’’ mused Julien, noting the bottomless reservoir of Recchi’s enthusiasm, “I don’t know which one is a kid. Skating around the ice, [Recchi] has the big smile on his face like a kid in his first camp.