The two solutions already up are very good, however I struggled to get this achievement, even with ratings of 9.9 and scoring tons of goals I still wasn't in the team of the week. So if anyone else had similar issues this is how I did it.
I picked to control Cristiano Ronaldo and simmed to the first league game of the season. Just to make it easier I put the difficulty on amateur and used the sliders to help me. Then go into the game controlling only Ronaldo, from there score a couple of goals and as long as you don't put a foot wrong after two goals you should have a rating of 10.0. If after two goals your rating is below this, just request a sub and try again next game. When you do get the rating of 10.0, be very careful with touching the pall, one misplaced pass and you lose it. I suggest either holding the ball in your half or simply hanging back out of play. Anyway once the clock reaches roughly 25-30 mins pause the game, on the tile which says matchfacts, use the right stick to move to the player ratings page, if it says N/A you need to play a little more, but if it says 10.0 simply request a sub and sim the rest of the game. Then simply sim to the next game and the achievement should pop!