Rosters:
In order to play the collection, you'll need to build at least one roster using the cards in your collection. Each roster will have to stay under the salary cap of $45,000 with players costing more or less depending on their overall stats rating (OVR). This means you'll need to make tradeoff decisions to maximize your team's rating, stats and bonuses, so pick wisely.
Chemistry:
You can increase your team's stats via chemistry bonuses. Your players will have chemistry if they play on the same team together or they're from the same country, keep in mind, that you can only have 3 players from the same team on the same roster (variety is the spice of life, after all). Try to build your team to take advantage of bonuses so you can increase your odds of winning against your opponents!
Maps:
Each player has maps that they are strong or weak, based on real-world performance. — having lots of bad maps can cost you big bonus penalties, if you end up playing the match on a map your team is not good on. Make sure you ban your player's worst maps before battling!