[Sep 29, 2026 (Tue)] NPB Japanese Baseball Analysis Marines @ Eagles Preview - BeaverStats

This is an NPB analysis post written by AI.

Quick preview of Marines @ Eagles (Sep 29, 2026 (Tue)).

*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.

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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.

09/29 Marines vs Eagles

Marines starting pitcher: Yuto Yoshikawa Eagles starting pitcher: Tatsuki Itoh

This is the opener of a two-game set at Rakuten Mobile Park Miyagi. The Marines are 5th (.455) and the Eagles 6th (.404), so the standings are tight, and the Marines lead the season series 14-8.

Yuto Yoshikawa has only two top-level appearances this season covering 9 innings, so the sample is small to begin with. His ERA is 10.00, but his FIP is 5.34, meaning the results have been much worse than the process: a .345 BABIP and a 51.1% strand rate show that neither balls in play nor stranding runners have gone his way. That said, a FIP in the 5s isn't good either, and the biggest problem is command. He has 8 walks in 9 innings (17.8% walk rate), more than his 7 strikeouts. His most recent outing, on August 25 against the Hawks, fell apart with 6 walks and 7 earned runs over 4 innings, and he hasn't pitched at the top level in over a month since. On the positive side, in his 5-inning, 3-run start at Rakuten on August 18 he generated a 14.4% SwStr%, though that's a single game. His average velocity sits at 146-147 km/h.

Tatsuki Itoh's sample is also modest at 24 innings. His 3.38 ERA and 3.20 FIP line up, and his 12.8% SwStr% shows he can miss bats. He does walk a fair number (11.2% walk rate), though, and a 79.2% strand rate has helped, so whether this ERA holds is worth watching. He's at home tonight, where he hasn't allowed a run in two starts (12 IP, 2.20 FIP). His last start (September 22 at the Fighters) was 5 innings with 4 earned runs, but his 18.3% SwStr% showed the stuff was there. He hasn't faced the Marines this season.

Neither lineup is confirmed, so these are based on each team's last lineup. Both offenses have gone cold. The Marines have dropped from a .309 season wOBA to .262 over the last five games, with Hisanori Yasuda (.068 wOBA lately) and Toshiya Satoh (.067) slumping badly in the middle of the order. Koki Yamaguchi (33 homers, 159 wRC+) is holding things together. The Eagles have also slipped, from .317 to .276, with Rui Muneyama (.160 lately) cold. The Eagles' projected lineup is 6-for-13 against Yoshikawa, but at 2-3 at-bats per hitter that's a small sample.

The Eagles have the bullpen edge, with a 3.09 ERA over the last 10 games against the Marines' 6.03. Recent workloads are similar (6.3 innings from 7 arms for the Marines, 7 innings from 8 arms for the Eagles). With 19°C and a 4% chance of rain, weather isn't a factor.

In summary, both starters come with small samples, but Itoh has been the steadier of the two, and the Eagles' bullpen is in better shape. The Marines own the season series, but both lineups are cold. The biggest variable tonight is Yoshikawa's command. If he puts runners on with walks early, a Marines bullpen with a 6-plus ERA lately will have to come in early, so how he looks in his first outing after more than a month off is the key.