North Melbourne star Colby McKercher has undergone minor surgery after suffering a fracture to his finger on his left hand.

The 20-year-old underwent the procedure on Tuesday.

The setback means McKercher will miss the Roos' match sim against Melbourne at Casey Fields on Friday.

However, he is expected to be fit to play in the club's Round 1 clash against Port Adelaide at Marvel Stadium.

Meanwhile young ruck Taylor Goad was sent for scans on his right ankle after leaving the ground during Wednesday's training session. The club will provide an update on Goad when available.