Nice point.
Most of them are going to test some strategies as there's a recent upgrade for the game itself. A lot of changes has been made and for sure they will all adjust at the first day of the major.
What I want to point out is that not all teams are going to try their best at the group stage and most of them might just end up splitting the series 1-1. But I somewhat agree that some teams might try out some of their newly formed strategies.
That's always what most teams are doing, they don't really put their best at the very first stage. So, there we go, three games are playing at the same time so it's another three matches for the other teams after the 2nd games end for the first 6 teams/3 games.
Well, as you're saying, I've seen that part for EG and their pick isn't impressive and is like a thrown pick.
I don't believe on strategy testing since most of them already done that on pubs and not on majors. You will no gonna be on this major if you are doing a strategy on actual matches especially on this prestigious tournament. Maybe some adjustment might be possible but for a literal test is quite a bit impractical on team like this. But I agree on taking the safe bet like +1 is the best pick on the early stage of this tournament since we don't have any data yet on how each team will perform when facing international teams.
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You probably have missed Team Nigma did that in many official matches. And just as I've said, there's a new patch that has been updated and they have to test it in actual games since they don't have that much time testing it on pubs with a good team to fight.