The first games are always tricky and it is difficult to know how stable the teams are. With new players requiring time to adapt to the team and to the strategy used, things gonna improve later.
Liverpool will face Bournemouth in the next round so a victory should occur or else it will be a bad start for them. Chelsea will face West Ham which isn't that easy so they will have to show their best to win.
Tottenham Hotspur - Manchester United and Manchester City - Newcastle are the best matches this weekend.