The Portugal international reached the figure in the recent 1-1 draw with Arsenal at Old Trafford.
It was clearly a proud moment for the defender, who has been a mainstay of the side again all season.
We took the opportunity to print a '200 Dalot' jersey to respect the occasion and asked Diogo to sign it, in order to create a unique prize.
All supporters can attempt to win the shirt by simply filling in our form.
One lucky winner will be contacted after the closing date for entries, which is Friday 11 April.