It was the first time in years De Rosario has missed the playoffs and the Canada star is unhappy.
"I would've liked to have seen a bit more heart, a few more players wanting to make a difference and to show up every day in training and compete in every game," De Rosario told mlsnet.com. "Once we have everyone with that kind of mentality, we'll have a team that will be very difficult to beat.
"There's bad apples on a lot of teams, but the bottom line is that at the end of the day when you go on the field, you all wear the jerseys. You're all part of the same team. If there's bad apples, they have to look at themselves in the mirror. Most players are trying to be progressive and trying to accomplish stuff here ... those who are trying to disrupt that off the field, they have to deal with their own conscience."