"If we continue to play like that we won't be here for long for sure," the former West Indies skipper said, blaming a poor bowling performance for losing their Pool B opener -- a match he believed his side should have won.
Sammy wore his heart on his sleeve as he talked to reporters after the match, and also issued an apology for using foul language picked up by on-field microphones during the game.
The all-rounder was one of the few bright lights in the West Indies side, posting a personal best one-day international score of 89 during a 154-run stand for the sixth wicket with Lendl Simmons, who made 102.
The West Indies, who had been 87 for five, recovered to 304 for seven in their 50 overs but it was still not enough as Ireland, who finished on 307 for six, won with 25 balls to spare.