The Ravens and Texans each scored a field goal in the first quarter of Saturday's divisional-round matchup.
But Baltimore has put the ball in the box for the game's first touchdown.
That play capped an 11-play, 76-yard drive that took 6:14 off the clock.
Jackson started the drive — and ended the first quarter — with a 23-yard scramble up the middle. Jackson then put the Ravens in Texans territory with a 17-yard pass to Zay Flowers.
Running back Gus Edwards converted third-and-1 with a 6-yard run and Jackson converted third-and-5 with a 15-yard scramble down to the 2-yard line.
A play later, Jackson connected with Agholor in the end zone to give Baltimore a seven-point advantage.
Each team hit a field goal of at least 50 yards in the first quarter. Justin Tucker scored the game’s first points with a 53-yard kick with 8:36 left in the period. Then Ka’imi Fairbairn connected from 50-yards out with 28 seconds left in the quarter.