How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 4/23100.0*Average seed
Cardiff City 2 Bolton Wanderers 1 +0.1
Derby County 1 Sheffield 1 -0.0
Middlesbrough 0 Ipswich Town 0 -0.0
Week of 5/2100.0*Average seed
Sheffield 3 Cardiff City 0 -0.1
Birmingham City 2 Middlesbrough 2 +0.0
Week of 5/7100.0*Average seed
Derby County 0 Ipswich Town 1 -0.4
Cardiff City 1 Birmingham City 1 -0.1
Points
Chance Will Win Championship