[4] Brown played for the Green Bay Blizzard of the Indoor Football League (IFL) in 2011.
He earned First Team All-IFL honors, was named Defensive Rookie of the Year and led the league in interceptions with 12.
[4] He was named Second-Team All-Arena as a rookie after recording 83.5 tackles, 21 pass breakups and 10 interceptions in 2012.
Brown earned Second Team All-Arena honors for the second consecutive year after totaling 79.5 tackles and eight interceptions in 18 games for the Rattlers in 2013.
[6][7] On July 8, 2017, the Rattlers defeated the Sioux Falls Storm in the United Bowl by a score of 50–41.