Lionel Messi said the Argentina have "many" things to improve after a nail-biting 3-2 win over Cape Verde in extra time on Friday night at Hard Rock Stadium Miami, pointing out his team's shortcomings in the round-of-32 victory. "Today, we put in a huge effort, as always, playing well and playing badly, just like we always say," Messi said after the game. "But I think the important thing now is to rest, think about what's coming next, and try to take positives from today's game.