Lopez can miss bats. He posted a 10.97 K/9 across 92.2 innings for the Athletics in 2025. But his 2026 looks nothing like that. He has walked 10 hitters across 8.1 innings, his pitch count is bloating before he can ever get deep into a game, and he has averaged 4.0 innings and 3.0 strikeouts per start. The 4.5 line is sitting half a strikeout above his actual pace, at plus money, against a Mets lineup that puts the bat on the ball.
Jacob Lopez has real strikeout stuff. The 2025 numbers are not a mirage. He posted a 10.97 K/9 across 92.2 innings for an Athletics team that asked him to give them 17 starts and got back legitimate swing-and-miss production. His slider is a wipeout pitch against left-handed bats, and when he is locating his fastball, the strikeout total can climb fast. So like the Sheehan prop, the question is not "can he miss bats?" The question is "can he miss enough bats in enough innings to clear the line?"
The 2026 answer has been a clear no, and the reason is command. Lopez has walked 10 hitters across 8.1 innings of work this season. That is a 10.8 BB/9, which is a wildly unsustainable rate for any major-league starter. Walks do two damaging things to a strikeout prop. First, they do not produce strikeouts (obviously). Second, they balloon his pitch count, which means he gets pulled earlier, which means he faces fewer hitters, which means he has fewer chances to record strikeouts. Lopez is currently averaging 91.5 pitches per start and only making it through 4.0 innings. That is the worst possible combination for a high-K prop.
Plug it into the math. He averaged 3 strikeouts per start in 2026. The line is 4.5. He needs to be 1.5 strikeouts better tonight than his current per-start pace to push the over, in a road start at Citi Field, against a Mets lineup that has historically put the ball in play more than it has chased. At +116, the book is paying you to bet that this trend continues for one more start. So far, the trend has been very loud.
Lopez's 2026 game log is the entire case for the under. Two starts, two pitch-count meltdowns, two outings under the line.
| Date | Opponent | IP | K | BB | ER | Pitches |
|---|---|---|---|---|---|---|
| Mar 30 | vs Atlanta | 4.0 | 0 | 5 | 3 | 91 |
| Apr 5 | vs Houston | 4.1 | 6 | 5 | 3 | 92 |
| 2026 totals | 8.1 | 6 | 10 | 6 | ~91.5 avg | |
Across his first two 2026 starts, Lopez has averaged 4.0 innings and 3.0 strikeouts per outing. The line is set at 4.5. He has cleared the under in both starts. The Atlanta start was a 0-strikeout shutout-of-himself: 91 pitches, 5 walks, no swings and misses to show for it. The Houston start was better - 6 strikeouts in 4.1 innings - but he still walked 5 hitters and got pulled at 92 pitches. The walks are the story. Until he stops giving up free passes, he cannot get deep enough into games to clear a 4.5 strikeout line at plus money.
Citi Field plays as one of the more pitcher-friendly parks in baseball, but that helps Lopez's run prevention more than his strikeout totals. What matters for tonight's prop is the Mets lineup itself. New York is a contact-oriented group built around veterans and middle-of-the-order bats who are not chase-prone. Against a pitcher whose primary out-pitch is a slider that needs to start in the zone and dive out, that lineup profile is a problem. They will not swing at the wipeout breaking ball Lopez wants them to chase.
What happens instead is the same thing that has happened in both 2026 starts: Lopez throws strike one, Lopez tries to get a chase on strike two, the chase does not come, the count gets to 2-2 or 3-2, and now he is throwing his fourth or fifth pitch of the at-bat. He either walks the hitter (10 BB in 8.1 IP says that is a coin flip), or he gets a foul ball into a defensive contact swing, or, in his best-case scenario, he punches the guy out on pitch 6 of the at-bat. Even the best-case scenario is bad for the over because it eats his pitch count.
The Mets being patient is exactly the opposite of what a walk-prone strikeout pitcher needs. Lopez wants a free-swinging lineup that bails him out on borderline pitches. He is not getting that in Queens this afternoon.
Every prop has risks. Here's the honest other side.
These are real, but the structural problem is the walks. Until Lopez fixes the command, he physically cannot face enough hitters in a 90-pitch outing to clear 5 strikeouts on a regular basis. The Houston start where he hit 6 K was the exception, not the rule, and even that one was a coin flip on the line he was facing. At plus money, you are being paid to assume the walk problem persists for one more outing. Two starts of evidence say it will.
This is the cleanest plus-money pitcher under on the board today. Sheehan's prop is workload-based. Lopez's prop is workload AND command-based, which is a more robust thesis because it does not depend on the front office's pitch-count plan. Even if the Athletics let Lopez throw 110 pitches tonight, the walks would still chew through his outing and prevent him from getting to a high strikeout total. The walks are the constraint, the strikeout cap is the consequence.
Lopez is a lefty with high-K stuff who currently cannot find the strike zone. That combination produces low-strikeout, low-IP outings almost by definition. He needs to walk fewer hitters, throw fewer pitches per at-bat, and earn the right to face more batters. None of those things have happened yet in 2026. The market is offering plus money to bet that they will not happen tonight, in a road start against a patient Mets lineup that punishes wildness.
At +116, the under needs to hit 46.3% of the time to break even. Lopez is 2-for-2 on the under in 2026, with a 3.0 K-per-start average that is 1.5 K below tonight's line. His 10 walks in 8.1 innings are the structural reason he has not been able to face enough batters to push his strikeout totals higher. As long as the command issue persists - and there is no reason from his last two starts to think it will not - the under is the side. Plus money on a 2-of-2 trend with a clear, persistent mechanical cause is exactly the kind of pitcher prop you want to be on.