The Oakland Raiders are going to have close to $70 million in salary cap room and they are expected to be aggressive in free agency, which starts Tuesday at 4 p.m. ET.

Wide receiver is arguably the team's biggest need. The following is one key fact from ESPN Stats & Information about the top unrestricted free-agent receivers available. I am listing them in order of what I believe to be Oakland's interest:

Randall Cobb, Green Bay

Fact: Cobb was the only player to have at least 1,000 yards and at least 10 touchdowns in the NFL while lining up in the slot in 2014. Cobb had 75 catches, 1,067 receiving yards and 12 touchdowns.

Jeremy Maclin, Philadelphia

Fact: Maclin was one of six receivers with at least 1,300 receiving yards and 10 receiving touchdowns in 2014.

Torrey Smith, Baltimore

Fact: Smith had 11 touchdown receptions on 49 total catches -- a scoring percentage of 22.4. It was the highest touchdown percentage by a receiver last season.