The Phillies have not yet received their alternate uniforms, but there's a reason for that
Answering an obvious baseball question: Why do the Yankees wear pinstripes? - CBSSports.com
For A Cool $1 Billion, MLB Adds Nike Swoosh To Uniforms
Wool ballcaps go out with a whimper as baseball flips its lid | News, Sports, Jobs - Lawrence Journal-World: news, information, headlines and events in Lawrence, Kansas
Question: Why Do Baseball Players Wear Polyester? | DNA Of SPORTS
Why Do Baseball Players Wear White Pants? (3 Reasons) | Little Ballparks
Men's Iowa Cubs Official NL Home Cap – Iowa Cubs Official Store
Why do MLB players wear one sleeve? - Quora
Why Do Soccer Players Wear The Number 11? | Tbones Baseball
A 50-year rewind with Larry Bowa to MLB's age of plastic grass, polyester uniforms, sweating like pigs | Jones - pennlive.com