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I took a short momentum of 5 and a long-term momentum of 15 points prior to the current rally. Each point has this rating of 1 to minus 1 and a time proximity multiplier. The point right before P zero, let’s call it P-1, is multiplied by the highest number, which is 17 in this case. A stroke 5 points back is multiplied by 8 and the point P minus 15 is multiplied by just 1.3. If Zwerev hit 15 aces in a row, he would have gotten a perfect score with the maximum possible value.