Why is John Olerud wearing a batting helmet while fielding his position? - Quora
Why don't all baseball players on the field wear a helmet? - Quora
Why is John Olerud wearing a batting helmet while fielding his position? - Quora
Why do MLB players have pine tar on their helmets? - Quora
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Acid Flashback Friday: John Olerud's Helmet
Why don't MLB players wear helmets with two ear protectors? - Quora
Childhood memories: John Olerud - Non-Ski Gabber
Do people here remember John Olerud? : r/Mariners
Uni Watch - History of headgear in MLB Alex Torres - ESPN
GSA Spotlight: Patrick McColl
