USA vs Australia had to be paused just minutes before full-time...
The Americans were already cruising to a 2-0 win over the Socceroos in the second half of Friday's Group D matchup when the game had to be halted when the referee went down.
German official Felix Zwayer suffered cramp during the six minutes of added time in Seattle with American star Florian Balogun having to help the referee stretch it out.
A FIFA medic in a blue bib rushed onto the field to tend to the referee as Zwayer's fourth official, Mexico's Katia Garcia, sprinted over.
Garcia appeared to hand Zwayer, who remained laying on the ground, a small bottle of liquid, which he knocked back.
One of the linesmen then made his way over with a bottle of water before taking over from Balogun and proceeding to stretch the official's left leg.
Zwayer was then helped to his feet with the game eventually resuming following a couple of minutes' delay.
'He needs to get salt in his body,' former FIFA referee and Fox rules analyst Mark Clattenburg said on the broadcast. 'It's a hot day. The referees are acclimatizing to the conditions and there's a prime example.'
He added: 'It's certainly happened to me in key games. It's a bit embarrassing but I'm sure he'll move on.'
