The 26-year-old has impressed of late, stepping up to help his side beat London rivals Chelsea and West Ham in recent weeks to put Mikel Arteta’s side in charge of the top four battle with Tottenham.
Son, however, gave Holding a torrid time in the first 30 minutes of the North London derby and the former Bolton defender gave his marching orders after picking up two bookings in quick succession.
Holding was booked either side of a brace from Harry Kane, the first a penalty after Cedric was punished for a push on Son and the second a bowed header following the red card.
Son then added a third second after the restart, putting all the pressure on Arsenal ahead of their must-see trip to Newcastle on Monday.
“Rob Holding is terrified of his pace,” Wright said while covering Premier League productions.
“In each case we see Rob Holding trying to win the ball.
“Especially after the first couple, you say okay that’s fine with him. Let him grab it and maybe drop it because you can’t afford to go down to ten men.
“He has nothing to complain about [for the red card]. This right side has been a problem for us. It was a lag. You can see how uncomfortable Holding was.
“At the end of the day, the way he was sent off, he has no defense of himself there.”