In this continuing series, we take a look ahead at US-bred and/or conceived runners entered for the upcoming weekend at the tracks on the Japan Racing Association circuit, with a focus on pedigree and/or performance in the sales ring. Here are the horses of interest for this Sunday running at Hanshin, Niigata and Nakayama Racecourses, the last of which stages the first colts' Classic of 2021, the G1 Satsuki Sho (Japanese 2000 Guineas) over the metric 10 furlongs: Sunday, April 18, 2021 1st-NII, ¥9,680,000 ($89k), Maiden, 3yo, 1800m ALIENOR (JPN)...