The Toronto Maple Leafs are taking another step toward solidifying the lineup they believe in.

Coach Mike Babcock announced an end, at least temporarily, to his rotation of bubble players, and Toronto will dress the best version of itself Thursday, an attempt to snuff out a two-game skid and swipe Round 1 from the mighty Tampa Bay Lightning, the Leafs’ closest thing to a franchise measuring stick.

Skilled forwards Jason Spezza and Nic Petan have seized the lead for the full-time gigs on Frederik Gauthier’s fourth line, surpassing — for now — KHL recruit Nick Shore and Marlies grad Dmytro Timashov, respectively.

And right-shot Justin Holl has thus far outduelled lefty Martin Marincin for the pleasure of skating with rookie phenom Rasmus Sandin on the club’s third defence pairing.