The film room: What PFF says about UAB's offensive collapse

UAB led 10-0 after the first quarter at Raymond James Stadium on Saturday. The offense scored zero points the rest of the way. South Florida won 30-10, and the stat line landed on Ryder Burton — six sacks, two fumbles returned for touchdowns, 13-of-27 passing behind an offensive line that could not hold up.

Alex Mortensen pointed to both after the game.

"We have to control the line of scrimmage better," Mortensen said. "About the only time the backs aren't productive is when they stop them before they get started. And so we've got to do a much better job of letting our backs get started."

He also put responsibility on his quarterback: "Quarterback's got to protect the ball when he's getting sacked. Or throw the ball away."

And then, more broadly: "If we're not going to be the greatest show on turf, let's make sure we at least don't beat ourselves."

The Pro Football Focus data supports Mortensen's framing. This was not one player's failure. It was a systemic breakdown — an offensive line that disintegrated after the first quarter and a quarterback who made costly mistakes behind it.

The first drive vs. everything after

The opening drive was the blueprint. UAB ran Bam McReynolds for 13 yards on first down. The line created movement. The backs got started. By the time Burton dropped back to throw, the defense was defending the entire field, and he hit CJ Smith for 41 yards on a shot play that would not have been there if the run game hadn't set it up.

"That's what you saw the first drive, where we were able to be productive and stay ahead of the chains, which allowed us to be aggressive and take a shot as the drive went on," Mortensen said.

For the entire game, UAB netted just 17 rushing yards on 33 attempts — and most of the productive carries came on that opening drive. After the first quarter, the backs gained yardage but sacks and tackles for loss erased it. South Florida stopped having to defend the run. The playbook narrowed. The pressure came.

The protection problem

PFF charted UAB's offensive line for 13 total pressures on 35 pass plays — six sacks, two hits and five hurries. Only two of the five starters graded above 60.0 overall.

The damage was concentrated on the right side, where the two starters combined for seven of the 13 pressures — three sacks, two quarterback hits and two hurries. The left side held up better. Left guard Donovan Lawrence posted the highest pass-blocking grade on the line and allowed just one hurry. Left tackle Keyon Cox was the highest-graded blocker overall. But an offensive line is five men working as one, and when one side of the pocket collapses, the quarterback has nowhere to step.

The run blocking told the same story. UAB's backs gained 75 yards on their carries, but sacks and tackles for loss erased 58 of them. The net: 17 yards on 33 rushing attempts.

C.J. Hicks, South Florida's defensive end, recorded four of the six sacks and forced both fumbles. He tied a South Florida program record. But as South Florida head coach Brian Hartline noted, it was not a one-man show. "A lot of those sacks were excellent, don't get me wrong, but he held the ball a little bit and they're only holding the ball because the back end's doing a great job," Hartline said. "So it's never a one-man show."

Burton's day in context

When the pocket was clean — 20 of his 35 dropbacks — Burton completed half his passes for 117 yards with no turnovers and a 67.1 fumble grade. Below average overall, but functional. He moved the chains. He protected the ball.

When pressure came — the other 15 dropbacks — he completed 3-of-7 for 32 yards with a 13.6 fumble grade. Both fumble-return touchdowns, all 14 points UAB handed to South Florida, came from pressured dropbacks.

Mortensen was right that Burton has to protect the ball. But the larger picture is that Burton was pressured on 42.9% of his dropbacks, and when he was pressured, 40% of the time it ended in a sack. His time to throw was 2.9 seconds — nearly identical to South Florida's quarterback. He was not holding the ball longer than normal. The protection was not lasting long enough.

The first-down problem

UAB's overall success rate against South Florida was 26.2%. South Florida's was 40.0%. The gap is almost entirely explained by what happened on first down.

On the opening drive, UAB won first down repeatedly — McReynolds 13, Robinson 6, Burton's 1-yard sneak for a first, then the 41-yard shot to Smith. The defense had to respect everything. The protection held because the play-action froze the rush.

After the first quarter, first-down plays increasingly produced zero or negative yardage. That created second-and-long and third-and-long — situations where everyone in the stadium knew Burton had to throw, and the offensive line had to hold its blocks for three seconds against a pass rush that no longer had to honor the run. The line could not do that. Burton ended up throwing from a collapsing pocket into coverage that was sitting on his routes.

UAB converted 4-of-16 third downs. That is not a quarterback problem. That is a structural problem. When the offense wins first down, the line can handle its assignments because the defense has to defend both run and pass. When the offense loses first down, the line is exposed, because the defense pins its ears back.

This is not new — but it is correctable

This is the same pattern that produced losses at Memphis and at Louisiana. At Memphis, UAB led at halftime and was dominated in the second half when the Tigers adjusted. At Louisiana, the first half got away from the Blazers. The question before Saturday was whether UAB's offense could sustain production for a full 60 minutes. The answer was one quarter.

The problem is real and it is difficult to correct mid-season. Offensive line play is built on reps, chemistry and consistency, and when the unit struggles in predictable passing situations, there is no schematic shortcut. Mortensen knows it. "I'm going to look in the mirror and take accountability myself," he said. "I expect there'll be some peer-to-peer accountability."

The schedule offers some reason for encouragement. Charlotte, Temple, UTSA and North Texas close out the regular season. All four will present challenges, but none have demonstrated the kind of defensive front that South Florida brought to Raymond James Stadium — or, for that matter, the defensive prowess of any of the teams that have beaten the Blazers this season. If UAB's line can stabilize against less dominant fronts, the offense that showed up in the first quarter Saturday is still in there.

It does not matter who is calling the plays. It does not matter who is behind center. If the offensive line cannot win on first down and protect in the passing game, the result against a good defensive front will be the same. The film says so. The numbers say so. Mortensen, carefully, is saying so too. But four games remain, and the road ahead is more forgiving than the road behind.