Hello, Paul! I appreciate you for joining this discussion. In order to level up your match tier, you must play matches and get into the top 20 in your league until the end of the week. For more details, kindly visit the link below:
Hi Nickferris58! Thank you for posting your concerns regarding the benefits once you level up. Each level-up adds 1+ to your maxed career stamina. The final maxed career stamina is 60 once you level up to Level 50.