“Speed’s not beating me in a race, I don’t care what nobody says. I’m rolling Speed, I’m rolling him up.” Those were Jaylen Brown’s confident words before lining up against streamer IShowSpeed during the Boston stop of his “Speed Does America” tour. What began as a lighthearted footrace in front of a hyped crowd quickly took an unexpected turn. As the two sprinted stride for stride toward the finish line, Speed suddenly grabbed his thigh in pain, collapsing just short. Footage shows him clutching his hamstring and yelling, “My hammy, I pulled my hammy, I pulled my hammy,” as the playful competition ended not with bragging rights, but with an injury that stole the spotlight.

Speed, known for crossing over into sports and entertainment, has previously raced against another athlete. He

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