[Oct 6, 2026 (Tue)] NPB Japanese Baseball Analysis Lions @ Marines Preview - BeaverStats

This is an NPB analysis post written by AI.

Quick preview of Lions @ Marines (Oct 6, 2026 (Tue)).

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10/06 Lions vs Marines

Lions starting pitcher: Natsuki Takeuchi Marines starting pitcher: Joey Lucchesi

This is the second and final game of the two-game set in Chiba. The Lions won yesterday's opener 7-1 for their second straight win, while the Marines have dropped one in a row. The Lions sit second in the standings (.565) and the Marines fifth (.453), but the season series is closer than the standings suggest at 13-11 in the Lions' favor.

Takeuchi has been a steady starter all year: 139 innings with a 3.37 ERA and a 3.01 FIP, so his results and underlying numbers line up. A 10.5% SwStr% and 27.9% CSW% put his stuff above average, and a 4.7% walk rate is his biggest strength. The recent trend is a little concerning, though. He was hit hard in back-to-back starts, allowing 7 earned runs in 5.1 innings against the Fighters on 9/13 and 6 in 4 innings against the Hawks on 9/23, and his last-five FIP has risen to 3.61. Interestingly, he still generated whiffs in both of those outings (12.5% and 11.5% SwStr%), so it may have been more about hard contact bunching up than his stuff falling apart. His velocity is drifting down, though, from a 146.1 km/h average in June to 144.5 km/h lately, with his max dropping from 150 to 146, which looks like late-season fatigue. He's on the road tonight, where he has a 3.64 ERA but a 2.85 FIP over 71.2 innings with a .316 BABIP, so his road results have lagged his underlying performance a bit.

His most reassuring number is his record against Chiba Lotte. In five starts against the Marines this season he has a 2.78 ERA and a 1.97 FIP over 32.1 innings, has not allowed a home run, and is 4-1. His recent meetings were even better, including 6.2 scoreless innings on 8/16 and 7 innings of one-run ball on 5/19. Five starts is not a definitive sample, but the Marines have rarely gotten to him.

Lucchesi has made only five starts (29 innings) this season, so the sample is small. Within those 29 innings his numbers are good: a 3.10 ERA, a 2.50 FIP, a 10.4% SwStr% and a 27.1% CSW%. However, his BABIP is a low .224 and his walk rate is 8.7%, so his .173 opponent batting average is unlikely to hold. His last two outings were 7 scoreless innings against the Buffaloes on 9/23 (32.2% CSW%) and 7 innings with 3 earned runs against the Eagles on 9/30, so he is going deep, and his velocity has been steady at 147-148 km/h. He has a 1.64 ERA in 11 home innings, but that is only about two starts. This will be his first outing against the Lions this season.

Neither lineup is confirmed yet, so both are based on each team's last game. The Lions scored seven runs yesterday, but they are hitting just .219 over their last five games, well below their .249 season mark. Cleanup hitter Tyler Nevin (137.6 wRC+, 21 HR) has hit just .125 over that stretch, and No. 2 hitter Taiga Hirasawa is at .063, so both the heart of the order and the table-setters have gone quiet. The Marines are slightly warmer at .266 over their last five versus .255 for the season, and Koki Yamaguchi is the reason. He has 38 homers with a 164 wRC+, and he's hit five homers in his last five games with a .564 wOBA, making him the hottest bat in this matchup. He has only gone 1-for-6 against Takeuchi, though. Among Marines hitters, Misho Nishikawa (5-for-15), Ryusei Ogawa (5-for-11) and Kyota Fujiwara (4-for-11) have hit him best, but all of those are samples of 15 at-bats or fewer.

The Lions have the clear bullpen edge. Their last-10-game bullpen ERA is 3.60 compared with 5.91 for the Marines, and recent workloads are similar (13.7 innings over eight pitchers vs 12.7 innings over nine), so fatigue shouldn't separate them much. The game is at ZOZO Marine Stadium with a temperature of 23.4°C and winds of 5.6 m/s, so the sea breeze could affect fly balls.

In summary, over the full season this matchup leans toward Takeuchi and the Lions' bullpen, but his two straight rough starts and dipping velocity are a real variable. The biggest factor tonight is likely whether Takeuchi, who has dominated the Marines all year, can shake off his recent struggles, or whether a Marines lineup led by a red-hot Yamaguchi can exploit that opening. Lucchesi's underlying numbers are good, but the sample is small and he has leaned on a low BABIP, so he isn't a lock to shut down the Lions even with their bats running cold.