The frantic reaction of Mohamed Salah said it all.
Harvey Elliott was thrusting down the right flank at Elland Road when a challenge by Leeds United defender Pascal Strujik left the Liverpool midfielder in a heap on the floor, screaming in agony.
Salah, the nearest team-mate to the incident, knew immediately something was wrong and hurriedly motioned for the medical staff to race on to the field and tend to the stricken youngster while imploring referee Craig Pawson to stop the game. Watching on from the touchline, Naby Keita had tears in his eyes as 18-year-old Elliott saw his encouraging start to the season brought to a shuddering halt with what was later diagnosed as a fracture dislocation of his left ankle.