Lamar Jackson suffered a knee injury on Sunday and there is no definitive timetable for his return, but it is not expected to be a season-ending injury.

Jackson will undergo more testing on Monday.

"It's going to be a number [of] days to weeks. We'll see," John Harbaugh said. "We'll see if he can go back this week. If not, it'll be sometime after that shortly."

Jackson is in his fifth-year option and is not under contract for next year.