Baltimore (5-3) won its second game in five days and took a half-game lead on Cincinnati in the AFC North, while Tampa Bay (3-5) fell a half-game behind Atlanta for first place in the NFC South.
Every team in that division owns a losing record.
Trailing 10-3 at halftime, the Ravens got their offense going behind Jackson. On its first drive of the second half, Baltimore covered 77 yards in nine plays, with Jackson finding Kenyan Drake for a 5-yard scoring strike.
The Ravens took the lead for good with five seconds remaining in the third, capping an 80-yard drive that lasted nearly seven minutes with a Jackson-to-Isaiah Likely 10-yard touchdown pass for a 17-10 advantage.