Morning Mound Visit: sabermetrics news - 4/30/19

FanGraphs | Devan Fink: The Atlantic League has implemented the no-shift rule, and it was used for the first time with... James Loney of all players, and incorrectly no less. Instead of awarding a ball, which is the rule, the umpires ruled an error because an infielder stood in the outfield. If this does make its way to the big leagues, there’s a lot of understanding that needs to happen first.

Baseball Prospectus | Matthew Trueblood ($): Marcus Stroman is finally dominant again like his rookie year, but not in the same way. He has ditched the sinker and moved on to the slider and cutter while maintaining his fastball velocity, allowing him to deceive hitters with three possible fastball-like pitches with varying movement.

The Ringer | Michael Baumann: If we were to look at previous top prospects like Bryce Harper, Byron Buxton, Matt Weiters, and Corey Seager as comparisons to Vladimir Guerrero Jr.’s status, it would tell us that he could possibly be a star, and his floor at its lowest is still a productive big league player for years.