Best debut in MLB history? Plus: RIP, Tommy John

The Windup Newsletter ⚾ | This is The Athletic’s MLB newsletter. Sign up here to receive The Windup directly in your inbox.We’ve never seen a debut like Joshua Báez’s on Saturday. Plus: The trade deadline did not clarify things in the American League, Jake Rogers is on a uniform collection quest and Tyler Kepner has our obituary for Tommy John, who passed away on Saturday.I’m Levi Weaver — welcome to The Windup.Big Swings: That 3-homer Báez debutCardinals outfielder Joshua Báez’s one-of-one debut was special from the very first big-league pitch he ever saw, which he blasted 449 feet to center field. But that had been done before — the 23-year-old prospect was the 140th player since 1900 to homer in his first big-league at-bat (the 13th just this year) and the 33rd to do it on the first pit