Let's face it, it's one of the easier opening games on paper, but I think many of the opening games have shown that nerves can get to teams on the first day.
As for the game, I thought Young and Walker were bollocks. Walker fucked up big time before the penalty, dropping his shoulder into trouble on the edge of the box. Henderson marshaled it fairly well and did play a handful of good long range passes and a great ball early doors that should have resulted in a goal.
I think the injury to Dele changed it, it coincided with a lack of pressing, we started to step off their defense and Sterling and Lingard showed that while we have a top quality striker, we lack consistency either side of him, for all their pace and guile. Snatching at chances and not being clinical enough.
Southgate should have taken Dele off earlier, it was obviously a problem. There's no point gambling on him, he'll be needed in more important games.
As for the ref, I'm loathed to blame conditions or poor officiating, but he was utter dross. Two penalties missed by him and VAR (what's the fucking point?) and that moment when their player wouldn't move away from the freekick, he blatantly ignored it despite being alerted to the issue. There were plenty of niggling cynical fouls from Tunisia that would normally have resulted in a card, did he produce any?
Terrible officiating, not the greatest of conditions and a poor individual mistake giving us jittery nerves, we got through it, now we need to push on. Overall we did ok, job done.