The Pirates fan who fell from the 21-foot Clemente Wall in right field at PNC Park in Pittsburgh has been identified, as a community leader says he is "fighting for his life."Kavan Markwood, 20, was critically injured after he fell from the bleachers and landed on the warning track during Wednesday's Pirates-Cubs game,

The hospitalized local athlete "is best known for his resilience, strength and kindness," a school district official said.

What is the Clemente Wall? The 21-foot high right field wall at PNC Park in Pittsburgh is named after Hall of Famer Roberto Clemente.