The Windup Newsletter ⚾ | This is The Athletic’s MLB newsletter. Sign up here to receive The Windup directly in your inbox.I’ve never had that much fun watching a Mets-Guardians game. Plus: We check in on Aaron Judge’s rehab, Britt Ghiroli takes on the “competitive window” and we investigate evidence suggesting the Dodgers are fallible?I’m Levi Weaver — welcome to The Windup!Instant Classic: Yan’s celebration, Genao’s historyI could’ve written an entire newsletter about last night’s Mets-Guardians game. The Mets won 6-5, but it was the kind of game that reminds you how baseball can be beautiful and capricious in ways that make the final score almost irrelevant.By now, you’ve likely seen Mets pitcher Jefry Yan’s strikeout celebration. (Yes, there’s only one ‘F’ and one ‘E’ in his name.) If not, what an honor to be the one to show you:I love it. Baseball joy is the best.If you’re a grump who can’t get on board with the celebration, how about the determination? Yan missed five years and was out of the sport, working construction and delivery jobs before his second chance in 2021, when he was signed back into affiliated baseball by the Marlins. Yan spent three years in that organization, then 2024 with the Seibu Lions in Japan and 2025 with the Rockies. He signed with the Mets as a minor-league free agent this past winter.Five years after his second chance — and after the Mets traded away half their bullpen at the deadline and called up Yan — he’s a big leaguer, nearly two weeks shy of his 30th birthday.Tim Britton has more on Yan’s journey back to the big leagues. It’s worth the read.Now we have some history to get to from 22-year-old Guardians rookie Angel Genao, who was the 14th-ranked player in Keith Law’s top 70 prospects before his big-league debut last night. Against the Mets, Genao became the 22nd player ever in MLB (since 1900) to rack up four hits in his debut, including a seventh-inning single to give the Guardians a 5-4 lead.After an error let the Mets score the tying run in the top of the ninth, Genao had a chance to tie Cecil Travis (Washington Nationals, 1933) for the MLB record of five hits in a debut. But with a runner on second, he flied out to the warning track.After an error let the Mets score the tying run in the top of the ninth, Genao had a chance to tie Cecil Travis (Washington Nationals, 1933) for the MLB record of five hits in a debut. But with a runner on second, he flied out to the warning track.Still, one of 22? Special.Here’s something weird: From April 1990 through May 2010, there was only one four-hit debut, from Derrick Gibson of the 1998 Colorado Rockies (Gibson finished with 14 career hits).Then in 2010, we got two of them, both by catchers: Wilson Ramos (Twins) and J.P. Arencibia (Blue Jays). After that? None until this year, when we got two more, both by shortstops-turned-third basemen (Kevin McGonigle also did it for Detroit on Opening Day).