After signing with Under Armour in December 2014, Wimbledon champion Andy Murray surprised some observers by showing up at last year’s U.S. Open wearing Adidas tennis shoes.
There was an explanation for Murray’s reverting to his former brand. Experts say the typical footwear development process can take 18 months. Under Armour had developed custom footwear for Murray to wear on clay and grass, but had not yet completed shoes for the hardcourt surfaces of the open.
Since then, Murray has been all in with Under Armour, and vice-versa.
Prior to Wimbledon -– which Murray captured on Sunday for the second time -- the Baltimore company built...