[Aug 5, 2026 (Wed)] NPB Japanese Baseball Analysis Lions vs Marines Preview - BeaverStats

This is an NPB analysis post written by AI.

Quick preview of Lions vs Marines (Aug 5, 2026 (Wed)).

*Lineups aren't confirmed yet! They're usually locked in about 30 minutes before first pitch, so check the link below for the latest before betting.

The screenshots below are captured straight from the site's data.

You can see the full, more detailed data on the game list.

This post was analyzed/written by AI based on data from beaverstats.com. Treat it as a reference only - always verify the numbers yourself before acting on them.

Lions vs Marines (08.05 18:00, ZOZO Marine Stadium)

Starters: Lions Sou Satoh / Marines Kaito Mouri

Starting with the standings and win percentages, the visiting Lions sit second in the league at 55-42-3 (.567), while the host Marines are down in fifth at 43-48-3 (.473). That gap is nearly ten points, so on the season-long picture alone it's hard to argue against the Lions being the better team.

There's a wrinkle here though that flips the angle a bit - the season head-to-head series actually favors the Marines 3-2. So while the Lions have the edge on the table, the Marines have actually held their own in this matchup, and they're riding a 5-3 home win from just yesterday (8/4) that keeps them ahead in the series - worth keeping an eye on.

Today's matchup is Marines' Kaito Mouri against Lions' Sou Satoh. Looking at recent velocity trends, Mouri has been steady in the low 143 km/h range (144.3→142.9→142.9→143.6→143.9), while Satoh has been trending slightly upward at 139.3→141.2→140.3→140.4→141.4. Neither pitcher shows any real concern on the velocity front.

On season numbers, Mouri sits at a 4.87 ERA with a 4.13 FIP over 57.1 innings - since FIP is lower than ERA, that suggests the underlying performance has actually been a bit better than the results show. Satoh, on the other hand, has a 2.77 ERA against a 3.32 FIP over 26 innings, meaning results have run a bit ahead of the process, though a FIP in the low 3s is still solid on its own.

Looking at the more recent-form indicator, last-5-start FIP, Mouri's has climbed to 4.80 over 20.1 innings, worse than his season mark - largely driven by one rough outing against Chunichi on June 10 where he gave up 10 runs in 3 innings. Satoh has actually only made 5 starts all season, so his last-5 FIP is identical to his season FIP (3.32) - basically the same sample as the whole year.

Digging a bit deeper into the head-to-head history, Mouri has beaten the Lions in all 4 starts against them this season with very stable run totals (0-0-1-2), while Satoh is 2-0 against the Marines as well (5 IP/1 ER, and 7 IP/0 ER with 9 strikeouts in the other). That said, Satoh's sample is just 2 games, so it's best treated as a reference point rather than a hard trend.

On the lineup side, neither team is running a confirmed today's-lineup - both are shown based on their most recent lineup. The matchup data against today's actual starters is a tiny sample (1-6 at-bats per hitter), so it's not something to lean on heavily. Instead, since both starters are left-handed, season splits against lefties are a steadier guide. For the Marines, Aito Takeda stands out with a clear .389 average against lefties, while Kyuto Ueda and Tsuyoshi Yamasaki are both around .100 and have struggled against lefty pitching - a factor worth watching. For the Lions, Tyler Nevin is the standout against lefties at .324 with a .732 slugging and 8 home runs, and Natsuo Takizawa is also hot at .321, while Alexander Canario (.191) and Anker Lin (.136) have had a tougher time against lefties.

Comparing team batting temperature between season and last-5-game averages, the Marines have bumped their average up from .264 to .273, while the Lions have actually cooled off from .261 down to .229 - so on the offensive-form angle alone, the Marines look like the hotter team right now.

On the bullpen side, the Marines' relief crew has a 2.36 ERA over their last 9 innings, while the Lions' pen sits at 3.00 over 10 innings - both are working on one day of rest, but the Marines' bullpen looks a bit more settled in terms of results.

In summary, the Lions hold the edge in overall standings and win percentage, and Sou Satoh's pace hasn't been bad either, but once you factor in the head-to-head series, the Marines' hotter recent bats, and their steadier bullpen, the home Marines have plenty to work with in this one. Kaito Mouri's shaky last-5 FIP is a variable worth watching, so it might be worth tracking how the early innings play out before drawing conclusions.