The Lions hoped to keep their slim lead for the NFC North division title. Playing against the Ravens, Detroit would rally in the first quarter before Baltimore's Justin Tucker kicked three field goals to give his team a halftime lead, 9-7. After trailing 12-10 in the third quarter, the Lions would take a 16-12 lead with another touchdown and a failed 2-point conversion. Turnovers again doomed the Lions. Matthew Stafford threw an interception, the third Lions turnover, late in the game, with Detroit clinging to a 16-15 lead. That would give Justin Tucker a chance at a 61-yard field goal, which he converted to give Baltimore an 18-16 victory. With the shocking loss, the Lions fell to 7-7 and third place within their division.

Based on the above article, answer a question. How many points did the Lions lose by?
2