Just finished my 9th match for today and finally scored my first goal. 1 goal in 9 matches - how is this possible!!! 16 shots on goal and 27 shots in general but still scored 1 goal only! And the match ended... with a draw 1-1 against the 1st the easiest opponent. So this week I was not able to complete even 1 card.
Some people from my FA had the same experience but some completed all 3 teams after the 1st attempt. So the question now is if your opponents and their difficulty depend on your progress. For example I have 38 cards out of 48 open. Do they really increased the difficulty so that we couldn't complete those last 10 cards so quickly and in this way decided to prolong this event. Because my team mates that completed the opponents easily had only 20-30 cards completed