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One other thing about Lester's glove

Elsa/Getty Images

Jon Lester's glove has gotten a lot of attention today because of the substance that appeared to be in the pocket, but that's not what we're focused on in the photo above.

If you look on the outside of the glove, you can see "ZEIN" written in a silver sharpie.

Lester explained to ESPNBoston.com that when the Red Sox traveled to Los Angeles to play the Dodgers in late August, Lester met Zein and his family. Zein is 6 years old and battling cancer.

"I take him out there with me every time I pitch," said Lester, a cancer survivor himself. "He's a pretty special kid."

Zein, who underwent a bone-marrow procedure Oct. 9, sent Lester a good-luck video earlier this week in preparation for the World Series.