Lionel Messi hailed Argentina's winning start to the World Cup after scoring a classic goal to see off Bosnia-Herzegovina.
Messi's trademark run and strike will go down as one of the great World Cup goals, but the Argentina captain admitted he was relieved the team had secured a 2-1 win in the Maracana after a disappointing first half.
Argentina had taken a lead in the third minute with a touch of fortune, Sead Kolasinac deflecting the ball into his own net, before Messi scored a stunning second after a superb run to make it 2-0.
Substitute Vedad Ibisevic grabbed a late goal for Bosnia - which could yet prove important in terms of qualification from Group F.
Messi said: "It's important that we started off on the right foot with the three points, but we do have things we must improve.
Argentina 2 Bosnia-Herzegovina 1 player ratings
Argentina 2 Bosnia-Herzegovina 1 player ratings
1/22 Argentina: Romero 7/10
Saved well from several Bosnian efforts without ever being really tested. Got caught out of position for late Ibisevic goal but played well.
2/22 Zabaleta 6
Not at his flying best and got caught out for late Bosnia goal but did fine overall.
3/22 Rojo 6
Yellow carded for a bad foul early on and had to be careful from then on, not bad but needs to get better.
4/22 Garay 7
In charge of the defence and kept Dzeko quiet, solid at the back.
5/22 Fernandez 6
Not a poor performance by any means but lacked that sparkle from full-back.
6/22 Campagnaro 4
Very little on offer and rightly removed at half-time.
7/22 Rodriguez 4
Substitued at halftime after ineffective first 45.
8/22 Mascherano 8
Argentina’s best player in the first half and good throughout second. Solid, strong and even had a couple of half decent efforts at goal
9/22 Aguero 6
Nowhere near his flowing best but good enough to cause problems at times.
10/22 Messi 8
Very quiet night for first hour but produced the only real moment of true quality with his quite sublime solo goal to win the match.
11/22 Di Maria 6
Some nice flicks and tricks but no real attacking thrust.
12/22 Bosnia: Begovic 7
Solid between the posts but helpless for either goal. Looked comfortable throughout and will be important in future games.
13/22 Mujdza 6
Did fine without really making any highlights or mistakes.
14/22 Kolasinac 6
Very unlucky to have own-goal to his name, helpless for it. Recovered well and played his part in defence after early mistake.
15/22 Besic 6
Like all the Bosnian back-four, did well to keep Argentina to relatively little chances, couldn’t get close to Messi for his goal though.
16/22 Bicakcic 6
Had a chance right at the death to put a good ball in but looked too tired. Did well in defence for the most part.
17/22 Pjanic 7
Played well in attack and got back to help defence throughout, good performance.
18/22 Spahic 5
Picked up a yellow card for bad foul but coped OK in midfield.
19/22 Hajrovic 8
Had several efforts at goal and was Bosnia’s best player. Needed that slight bit of extra quality to turn his chances into goals but did very well.
20/22 Dzeko 5
Tough task as the lone striker and never really had a sniff at goal. Bosnia need him to be better the their next two games.
21/22 Misimovic 5
Busy but ultimately not a major impact on the game.
22/22 Lulic 7
Did well up and down the wing and can be happy with his performance. Good pass for Ibisevic’s goal.
"It's not easy with all the anxiety and the nerves, but the important thing is the result. We had a great second half. We had the ball much more, created several opportunities and that's what we have to continue to do."
Argentina coach Alejandro Sabella only awarded his team a mark of 6 out 10 and said his half-time changes to provide more support to Messi had been crucial.
Sabella said: "On balance I would give it a 6. We need to improve and part of that is in my hands - it is up to me.
"The changes at half-time just produced this improvement. They were playing better together and there was more support around Messi. Once Messi received the ball there was better follow-up and better support.
"I think that, whatever happens in this World Cup, he is among the best players in the history of football."
Messi himself acknowledged the changes from five in defence to a 4-3-3 formation made it much easier for him and fellow striker Sergio Aguero.
He said: "As strikers, we prefer that system as it gives us more attacking opportunities and if we don't use that system we suffer a bit.
"I was often on my own and so was Kun [Aguero] and it was very difficult, so there are things to be improved on."
Sabella confirmed that he had taken Aguero off as he had seemed tired rather than for injury reasons, even though the Manchester City frontman had appeared to be limping.
Bosnia coach Safet Susic was satisfied with his team's performance in a match which he said had been settled by one of the best players in the world of all time.
Susic said: "We are realistic people and our goal was to put as much resistance as possible to one of the favourites to win the title, and this is what we have done.
"I am satisfied with what I saw, especially after we had this misfortune to concede an own goal in the first couple of minutes.
"It is a huge satisfaction to take part for the first time in the World Cup and play against a great team and one of the best players in the world - and not only of today but of all time."