Gabbert was 2-0 at the Edward Jones Dome in college, helping Missouri beat Illinois twice in his hometown. He's 5-22 as the Jaguars' starter.
In a span of four plays early in the second quarter, the Rams tied it on a short field goal by Greg Zuerlein and capitalized on a turnover to take their first lead. Darian Stewart stripped Clay Harbor after a short reception and returned the fumble 19 yards to the Jacksonville 16, and Lance Kendricks stretched for the pylon on the next snap.
The Jaguars totaled eight points in the first half all season before busting out with 10 in the first quarter. Blackmon's TD was their longest play of the year.
Jones-Drew had 70 yards on 17 carries and is the third Jaguars player to top 10,000 yards.
Notes: The Jaguars' Sen'Derrrick Marks got his first sack of the year plus a pass deflection in the first quarter. ... Jacksonville's last TD in the first quarter was a 5-yard reception by Jordan Shipley from Chad Henne against Tennessee in the 2012 finale. ... Giordano has two career interception returns for touchdowns, also doing it for the Colts in 2007.
AP NFL website: www.pro32.ap.org