Under Armour announces 10-year deal to outfit all of Major League Baseball – Baltimore Sun
Nike Baseball Unveils New Vapor Collection - Nike News
What Pros Wear: WPW Report: MLB Bats & Batting Gloves 2018 (Brand Usage, Trends) - What Pros Wear
Paul Lukas on Twitter: "Nike logo was added to MLB undershirt collar in 2010. Players who have shoe deals with non-Nike companies sometimes remove the logo. https://t.co/EZhapoTowQ" / Twitter