Law allows for the fourth official to assist the referee in any onfield matters and it was a pity that both Probert and the active assistant, Adam Watts, missed the off-the-ball offence.
It appeared a violent and deliberate attack from an aggressive player and should have resulted in a red card for the Stoke central defender.
Lonely walk: Robert Huth's challenge on Mario Balotelli went unpunished
Whether the Football Association will act over the issue is anyone's guess.
It follows a week when a dreadful tackle like Charlie Adam's on Gareth Bale went unpunished while Sir Alex Ferguson was charged for praising Howard Webb before a game. What IS going on?
Probert will be keeping his eyes on Huth and Balotelli tomorrow night, when he takes charge of the Cup final 'rematch' between the clubs.
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?Explore more:People: Alex Ferguson, Robert Huth, Mario Balotelli, Charlie Adam, Martin Atkinson Organisations: Football Association
Source: Daily Mail
Source: Daily Mail