Kodai Senga on Wed, Sep 23, 2026

A scoreless inning for Senga, but the same season-long fault lines remain

Senga turned in a clean outing against Texas: 1.0 inning, 1 hit, 0 walks, 2 strikeouts, 0 earned runs. Against a season line of a 7.34 ERA and 1.65 WHIP, this counts as a genuinely encouraging performance, even in relief.

The volatility over his last ten appearances tells the real story. Just two days earlier against Philadelphia he lasted only a third of an inning while allowing three runs, and now he bounces back with a clean frame — the swings from outing to outing have been dramatic rather than gradual. The more structurally interesting number is his platoon split: he has held right-handed batters to a .204 average and .795 OPS, but left-handed batters are hitting .295 with a .924 OPS against him. That is a reversed platoon pattern for a right-hander, and it strongly suggests his current pitch mix simply does not neutralize lefties the way it does righties. No pitch-by-pitch data survived from tonight's outing, but the zero walks are a meaningful signal on their own — it points to him attacking the strike zone early in counts rather than nibbling, which lines up with a strikeout-capable arm even in a rough season; his underlying strikeout-to-walk profile has never been the core problem.

Going forward, the composition of the opposing lineup will matter as much as Senga's own execution. If he keeps running into left-handed-heavy lineups, that .924 OPS split will keep resurfacing regardless of how clean an inning like tonight's looks. The next few outings against lineups tilted more right-handed will be the real test of whether he can turn strong process into a break from the 0-9 record.

Unicorn's takeaway: clean process tonight, but the left-handed platoon gap is still the number that will decide his next few starts.