[Jul 23, 2026 (Thu)] NPB Japanese Baseball Analysis Fighters vs Lions Preview - BeaverStats

This is an NPB analysis post written by AI.

Quick preview of Fighters vs Lions (Jul 23, 2026 (Thu)).

*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.

Fighters vs Lions (07.23 18:00, Belluna Dome)

Starters: Fighters Kitayama Koki / Lions Sumida Chihiro

Seibu sit second in the standings at a .580 win rate (52-3-37) and have won three in a row, while Nippon-Ham are third at .550 (51-0-42) and have dropped their last two, so both the table and recent momentum lean slightly toward Seibu. The season series backs that up too -- Seibu hold a 9-7 edge in the head-to-head -- so there's no real reversal story here, just Seibu carrying a modest overall edge into this one.

On the mound, it's Nippon-Ham's Kitayama Koki against Seibu's Sumida Chihiro. Kitayama's velocity has climbed steadily over his last five outings -- 148.7, 149.7, 150.0, 151.1, 151.0 km/h -- showing he's building arm strength as the summer goes on, while Sumida has bounced around a bit (147.1, 146.7, 147.4, 146.1, 148.2) before ticking back up to 148 in his most recent start. Season ERA has both pitchers in elite territory -- Sumida at 2.27, Kitayama at 2.15 -- so on paper this looks like a near-even pitching matchup.

The last-five-start FIP tells a slightly different story, though. Sumida's recent FIP sits at 1.90, actually better than his season ERA, suggesting his stuff has been trending up. Kitayama's recent FIP, on the other hand, is 3.32 -- well above his season ERA -- which hints his results lately have been a bit better than his underlying numbers. Their head-to-head history is mixed as well: Sumida has beaten Nippon-Ham in two of his last three starts against them (July 12, June 27, April 30), including a scoreless complete-game win, while Kitayama has lost both of his last two starts against Seibu (May 17, April 17) despite going 5-6 innings each time.

Both lineups are still unconfirmed heading into today, so there's some chance of late changes before first pitch. Offensively, Seibu have heated up, hitting .280 over their last five games after a .243 season mark, while Nippon-Ham have cooled slightly, dropping from .272 for the season to .257 over the same stretch. The bullpens tell a similar story -- Seibu's relievers have logged more work recently (15 innings) but still posted a sharp 2.56 ERA, while Nippon-Ham's pen has thrown less (9.1 innings) yet carries a shakier 3.73 mark.

Across the board -- standings, season series, recent form, hot bats, and bullpen health -- the signals lean modestly toward Seibu at home, though with both starters running ERAs in the low-2.00s, this is the kind of game that can turn on just an inning or two either way.