Johnson was loaned to AHL Rochester on Sunday.
Johnson was recalled by the Sabres on Thursday, Lance Lysowski of The Buffalo News reports.
Johnson (lower body) was loaned to AHL Rochester on Friday.
Johnson (lower body) won't play in Monday's preseason finale against Detroit, Mike Harrington of The Buffalo News reports.
Johnson was assigned to the AHL on Friday, per Lance Lysowski of The Buffalo News.
Johnson was summoned from AHL Rochester on Friday, per Lance Lysowski of The Buffalo News.
Johnson was returned to AHL Rochester on Friday.
Johnson notched an assist and skated to a plus-2 rating in Thursday's 9-3 win over the Maple Leafs.
Johnson was called up from AHL Rochester and will make his NHL debut Saturday versus Toronto.
Johnson signed a two-year, entry-level contract with Buffalo on Saturday, Lance Lysowski of the Buffalo News reports.