For Marlins' Luis Arraez, .400 season possible because of rigorous routine and one expensive gift - The Athletic
How Marlins' Luis Arraez is chasing .400 and MLB history
1984 Topps George Brett
George Brett – Society for American Baseball Research
George Brett's quest for .400 batting average fell off pace 35 years ago - ESPN
July 25, 1990: George Brett hits for second career cycle – Society for American Baseball Research
KC Royals catcher Salvador Perez historic MLB pace; analysis
Hall of Famer George Brett rooting for Marlins' Luis Arraez in .400 chase
Best individual offensive season for each MLB team
A Sudden Slide Into Uncertainty - Sports Illustrated Vault
World Series Special: George Brett's West Virginia Birth and the American Dream — Moundsville and Glen Dale Claim “Throwback” Hall of Fame Third Baseman - Moundsville: PBS Film & Magazine
The Royals' George Brett goes 4-for-4 to raise his average to .401
KC@CAL: Brett gets 3,000th hit, congratulated by team
Sept. 19, 1980 – In the George Brett goes 2-for-4, keeping his season batting average at .400