Possible Clues:

• Court wear, maybe
• Company with an Energy Boost line
• Athletic brand founded by Adolf Dassler
• Title sneaker brand in a Run-D.M.C. hit
• TaylorMade parent
• Clothing provider for tennis's Andy Murray
• Brand of clothing often used in breakdancing
• Supplier of footwear bill 1 down sent back
• Major World Cup sponsor
• Athletic brand based in Bavaria