Mets rookie Jefry Yan's debut strikeout celebration goes viral

New York Mets left‑hander Jefry Yan made his major‑league debut on August 5, 2026 at Progressive Field in Cleveland. In the sixth inning he faced pinch‑hitter Ángel Martínez, threw an 88.7 mph slider and recorded his first career strikeout. Yan then performed his signature high‑jump celebration, leaping, landing on one knee and slapping the grass. He repeated the routine after a second strikeout of Chase DeLauter, and later escaped a bases‑loaded jam with a ground‑out to preserve a 6‑5 lead.

The Mets held on for a 6‑5 win in 10 innings. Cleveland fans booed Yan’s celebrations, to which he replied, “If they want to yell at me, they can do whatever they want. I’m in my zone.” Interim manager Andy Green called the performance “real stuff” and “really impressive.” Yan, 29, signed with the Mets after a long minor‑league journey that included Tommy John surgery, work in construction, and stints in Japan and the Rockies system. His debut added a high‑velocity arm to a bullpen that had been rebuilt after the trade deadline.

The exuberant celebration sparked debate about baseball’s unwritten rules, with some fans and commentators calling it refreshing and others deeming it excessive, highlighting a broader conversation about player expression in MLB.