John Olerud – Society for American Baseball Research
One of the Most Underrated Trades in Mets History - Metsmerized Online
5 Underrated MLB Stars of the Past - Dynes Pressbox
Is John Olerud the most underrated MLB player of all time? - Quora
Inside the legend of John Olerud, college baseball's two-way star - ESPN
Inside the legend of John Olerud, college baseball's two-way star - ESPN
John Olerud, Justin Morneau lead 2020 class into Canadian Baseball Hall of Fame
TIL John Olerud wears a batting helmet in the field. : r/MLBTheShow
John Olerud was a Seriously Underrated Baseball Player : r/NewYorkMets
The all-time all-underrated team - ESPN - SweetSpot- ESPN
Groz Remembers 2001 Mariners: Hometown hero John Olerud's big year - Seattle Sports
How Did This Happen, Volume 11: Intentional Walking John Olerud - 18 Stripes
John Olerud – Society for American Baseball Research