While Padres rookie Jackson Merrill already made his big-league debut in the Seoul Series against the Dodgers, Thursday’s Opening Day in San Diego came with a “welcome to the bigs” moment. A sinker from Logan Webb will do that. Facing Webb in the third inning, baseball’s No. 12 prospect worked the count even at 2-2 before the Giants ace unleashed one of the more ridiculous sinkers we’ll see this season. Though the tweet above called it a two seamer at 23 inches of run, Statcast recorded the pitch as a 91.8 mph sinker with 22 inches or horizontal break. Considering...