How to get 1 105 over 3v3 master with 400 stamina only I did the math and heres what u got to do:

Buy 3× coin packs daily (totally for 5 days:225000 coins )

Get 3 stars on all events, if u r not getting 3 stars quit the event and restart 

Remember to add the 10 % court booster at the start
 
Get 5  bonus packs daily 

So here's the calculation:

5 bonus packs:500×5=2500 points 

3 coin packs : 1500×5=7500 points 

First 2 and half days with 10 % boost :3500×1.1×2.5=9625 points 

Next 2 and half days with 20% boost ( u get a 10% booster player at 13100 points ):10500 points 

So totally:2500+7500+9625+10500=30125 points 

We r 875 points short so complete the 50 stamina first win event 8 times totally