After seven years in the Lone Star State and most of one on Causeway Street, Loui Eriksson has been up, down, and all around. Last season he played on three lines in two games. So the uncertainty about whether and when he’ll be joining the injured David Krejci and Milan Lucic on the Bruins’ No. 1 trio is nothing new for a man who has played more roles than Johnny Depp.

“I’ve been in this situation, especially when I was in Dallas and played on the first line and everything,” said the man who has been tapped as a possible successor to the departed Jarome Iginla on the right wing when Boston starts its season Wednesday night against Philadelphia at TD Garden. “I’ve been doing it, so I feel comfortable being there.”

Amid hockey’s hurly-burly, comfort comes from what its practitioners call “chemistry,” the elusive alchemy that arises from the serendipitous mixing and matching of three forwards whose skills and sensibilities complement each other.

“On what you know from different players, you kind of project that this guy could be a good fit and possibly not that guy,” said Bruins coach Claude Julien.

Theoretically, putting the versatile Eriksson to the right of Lucic and Krejci is a feasible move, but their preseason performance as a unit was inconclusive, and it’s unclear whether Eriksson will stay with them.

“We haven’t made that decision yet,” Julien said Tuesday morning, noting that Eriksson could use more time to get acquainted with his potential linemates. “There’s still some things we have to look at. Certainly he’s one of the guys that we think can be a fit.

“It may take …read more