KC Concepcion addresses speech impediment after NFL combine clip draws attention: 'This is who I am' KC Concepcion has spoken openly about his speech impediment multiple times leading up to the 2026 NFL Draft. Content Original Link: https://sports.yahoo.com/nfl/article/kc-concepcion-addresses-speech-impediment-after-nfl-combine-clip-draws-attention-this-is-who-i-am-145849961.html