The Toronto Maple Leafs rookies and prospects have been on the ice recently trying to earn invitations to NHL camp. 

One of the Leafs' top prospects, Nick Robertson, has been participating as he looks to earn an NHL roster spot before the start of the season. 

Unfortunately some are saying he hurt his own chances after the Leafs' prospects played the Columbus Blue Jackets' prospects. 

Near the end of the game Robertson received a major penalty and game misconduct. 

Robertson's penalty actually ended up giving the Blue Jackets a power play during the entire overtime period which eventually led to a Blue Jackets goal. 

Leafs' analysts are saying lack of discipline during important moments can definitely hurt Robertson's chances at making the NHL roster.