FIFA 10
54 Achievements
1,250
50-60h
Xbox 360
Match Winner
Win 10 matches in Ultimate Team mode
15
How to unlock the Match Winner achievement in FIFA 10 - Definitive Guide
A good tip would be to play the first single player tournaments available to you, extremely easy to rack up wins...coins and trophies which will add to your other tournament progress.
Create your dream team, play and win 10 games, doesn't have to be a straight ten wins so keep at it and you should get there soon enough.
Unobtainable due to server closure
Again, very easy. This will count for any type of match, including friendlies and tournaments. Just win 10 and the trophy will pop.
Should be one of your first achievements. Just win 10 games. They do not have to be done in the tournaments and can be done online or offline.