Former MLS forward Twellman calls for concussion protocols ahead of World Cup

Former MLS MVP Taylor Twellman wants Fifa to implement mandatory concussion substitution rules worldwide, warning that inconsistent protocols among the 48 nations competing in this year’s World Cup could put players at risk.

“Quite honestly, Fifa should have a concussion sub universal in all the leagues around the world,” he told Reuters.

The 45-year-old broadcaster, whose playing career ended due to post-concussion syndrome, has become one of soccer’s leading voices on brain...