The Atlanta Falcons made a big splash at the start of free agency with the addition of former Browns three-time Pro Bowl center Alex Mack.

The Falcons gave him a five-year contract worth $45 million -- the highest average per year for any center in the league -- with $28.5 million guaranteed. His base salary of $1.75 million in 2016 makes his cap number $4.05 million, lower than left guard Andy Levitre ($5,375,000) and left tackle Jake Matthews ($4,480,773) on the offensive line.

Here is how Mack's full contract breaks down:

2016

Base salary: $1,750,000

Cap: $4,050,000

Cash: $13,250,000

Guaranteed: $1,750,000

2017

Base salary: $6,750,000

Cap: $9,050,000

Cash: $6,750,000

Guaranteed: $6,750,000

2018

Base salary: $8,500,000

Cap: $10,800,000

Cash: $8,500,000

Guaranteed:: $0

2019

Base salary: $8,500,000*

Cap: $10,800,000

Cash: $8,500,000

Guaranteed: $0

*Base salary guaranteed for injury only at signing. Becomes fully guaranteed if on roster 5/15/17.

2020

Base salary: $8,000,000

Cap: $10,300,000

Cash: $8,000,000

Guaranteed: $0