Not on the current slate
River hasn't been scored in 39 days — his last matchup was against Pittsburgh Pirates on Sunday, September 27, 2026. A gap that long usually means an injury, a minor-league option, or a roster move rather than a rest day. Everything below is his most recent real production, not a projection.
Season line
2 starts, 0-1, 4.15 ERA, 1.85 WHIP, 4.1 innings. He's struck out 6 over that span, against 3 walks. This is the baseline the matchup adjusts from — the model starts here and then asks what the specific lineup he's facing does to strikeout arms, how the park plays, and how deep he's likely to go.
He throws right-handed
River throws right-handed, which is the ordinary case and means fewer wild swings in the lineup he faces. Opposing managers aren't restacking against him the way they would a left-hander, so his projection moves more on the quality of the lineup than on its handedness. What does move it: how deep he's been going lately, and whether the lineup in front of him strikes out.
A long gap since his last start
River hasn't started in 39 days. That's the single most useful warning on a pitcher's page, and it's the model's weakest spot. A gap that long usually means an injured-list stint, and a first start back is often on a strict pitch limit that no stat line reveals — books frequently don't post an outs line at all in that spot. Our projection is built on his healthy workload, so it will overshoot a shortened rehab start. Read any projection here with that in mind until he's stretched back out.
Where he lands across our boards
River was scored on 6 boards in that matchup, and the spread is the interesting part: earned runs graded 76.8/100 while outs recorded came in at 20.3/100. Same player, same game, same opposing arm — different questions. A spread that wide usually means the matchup favours one kind of outcome over another, and it's the clearest argument for reading the board that matches what you actually care about.
How the model reads him
River's score rates the matchup in front of him — the opposing lineup against his handedness, expected batters faced, the park and the weather — normalized 0–100 against the slate and graded against the box score. The weighting is ours and re-tunes weekly; the record is public. For River specifically, he's coming off a 39-day gap, so treat the projection as a ceiling.
The full method, and the season-wide graded record, is on how MatchWiz works.