South Alabama Jaguars vs Marshall Thundering Herd prediction: Marshall's Giveaway Habit Gives South Alabama a Tuesday Night Opening

Six Giveaways, No Starter

Marshall hosts its first Tuesday night home game since 2008 with a quarterback question it won't answer until kickoff day. The Herd lost 27-21 to Coastal Carolina while committing six turnovers. Carlos Del Rio-Wilson went 2 of 6 for 37 yards with three interceptions before he was pulled, and Marshall used three quarterbacks in that game.

Tony Gibson is keeping the decision quiet: "Next Tuesday, we'll see who the first guy is at quarterback." Zion Turner looks like the likely replacement, but Marshall hasn't confirmed it.

The Coastal game wasn't a one-off. Marshall gives the ball away 2.33 times per game, 137th of 138 FBS teams. South Alabama takes it away 1.83 times per game, 16th nationally. Defender Damyrion Darby has three interceptions, two of them in the last three games. On the other side, the Jaguars protect the ball as well as almost anyone, committing 0.5 turnovers per game (10th). For a 3-3 Marshall team chasing bowl eligibility, a clean game from whoever starts may matter more than any scheme tweak.

The Jaguars Run Downhill

South Alabama's offense runs first and runs well, at 220.3 rushing yards per game (16th). Marshall's front has struggled to slow anyone, allowing 193.8 rushing yards per game (123rd). Line yards, which credit the blockers for the first few yards of each carry, tell the same story: the Herd rank 121st in line yards allowed. They also rank 114th in stuff rate, the share of runs stopped at or behind the line.

Keenan Phillips is coming off 157 yards and three touchdowns at Arkansas State. PJ Martin added 95 in that game, and the pair split the work almost evenly. Jared Hollins should have time when he does throw. Marshall averages 0.83 sacks per game (133rd), while South Alabama allows 1.0 (16th).

Two Defenses With Nowhere to Hide

The Jaguars' 4-2 record hides a defense in serious trouble. South Alabama allows a 51.4% success rate (the share of plays that keep an offense on schedule), which ranks 137th. Over the last three games that figure climbed to 57.4%, and opponents averaged 43.0 points.

Marshall's pass defense has been worse by EPA (expected points added per play), allowing 0.504 per dropback, 137th nationally. That is a problem against Hollins, who averages 9.3 yards per attempt. Anthony Eager has four touchdown catches and turned four receptions into 168 yards against UL Monroe.

The Herd's offense has a finishing problem. Marshall scores 2.5 points per scoring opportunity, 130th, against a Jaguars defense that allows 4.75 (135th). If the Herd's drives keep stalling deep in South Alabama territory, the 62.5 total is in danger. If they don't, it may not be high enough. Wide receiver Chris Culliver, who missed the Coastal game, is expected back.

Field Position and the Number

South Alabama wins the hidden yards. The Jaguars start drives at their own 32.1-yard line on average (17th), while Marshall starts at its 27.0 (109th). A 27.7-yard kick return average (14th) helps, as did the 100-yard touchdown return at Arkansas State. The one weak spot is punting: South Alabama's 37.9-yard gross average ranks 137th.

The market has held South Alabama at 2.5 points since the open, across 19 books. The Jaguars are 4-2 against the spread, and Marshall is 1-5. South Alabama also brings 12 days of rest against Marshall's 10.

One tested pattern fits this game: when the favorite covers, its rushing goes over its line 33.9% of the time, against 25.3% if the two were unrelated. A Jaguars cover probably runs through Phillips and Martin.