The problem is I don't think being aggressive from the start is the nature of GGG and probably it could be a problem if he tries that. But if he also takes too much time to set the pace, Canelo is going to try to take advantage of that as well because he scores points often in the later part. So, GGG will have to approach with caution. He can be aggressive but he will have to be careful so that he does not get too aggressive and let his guard down. Because he can get countered and knocked onto the canvas.
If we refer on GGG's last fight against Murata, there's no aggressiveness on GGG on the early rounds. Lots of punches being thrown successfully by Murata and all those are good shots. There was even lots of solid punches that Murata gave on GGG during the first few rounds.
While the fight is progressing, GGG now slowly get back on track and becomes beast mode. Murata can't answer now and that leads for GGG to a knock out win at Round 9. That proves that GGG still has the strength and power to end the fight in a KO Victory.
But that situation shouldn't be applied against Canelo. Every rounds count and matters if fighting against Canelo in scorecard.
Against Canelo, you will have to start early and tag him early. Otherwise, if he let Canelo set the pace, GGG is going to find it difficult later on. I know that GGG Is not an early starter but he might have to make an exception against Canelo. Because Canelo will try to take things on the judge’s scorecard. And that might prove to be a problem for Golovkin.
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You can't compare Murata with Canelo. The latter is at an entirely different level. When was the last time Canelo got KO-ed? Even his loss against Floyd Mayweather Jr. back in 2013 was not from KO, but from majority decision. Golovkin is the king of knockouts, but I don't think that he has much of a chance to repeat that against Canelo. Anyway, I agree with the prediction. Canelo is likely to win the initial rounds. I expect Golovkin to make a comeback from 4th round onwards. But it needs to be seen whether he can win 7 out of the 12 rounds (especially with the judges being biased towards Canelo).
That is why I don’t think it is going to be a good idea for Golovin to take it to the judge. He should take matters into his own hand. And he should be aggressive from the early rounds. There is not much chance of him knocking out Canelo in my opinion.
So, I think he should pressure Canelo early on. But the problem is he is kind of like Joe Frazier, who likes to get used to the opponent's rhythm. But if he does that, will he be able to get explosive enough in the later rounds to make sure there is a victory waiting for him in the end?