How grading works
Each Riven stat is base × disposition (ω) × config weight × roll (90–110%). We back out the roll factor from your entered value and map it to a letter grade. Overall grade averages the positives.
Screenshot OCR uses Tesseract.js locally. Crop tightly around the mod card for best results, then fix any misreads in the form.
Weekly plat averages come from Digital Extremes’ public trade snapshot (unrolled vs rerolled). Your exact roll will differ.