Leeds came close to EPL promotion in 2006, falling in the playoffs to Watford. But Leeds was relegated to the third-tier (League One) after the 2006-07 season. Lewis played in one league game and one League Cup game this season before the Derby transfer.
Feilhaber has yet to see action for Derby, which won promotion to the EPL last season through the League Championship playoffs.
Derby is winless this season with two losses and a tie.
Lewis played for the USA at the 2002 and 2006 World Cups. He has 73 caps and eight goals for the USA.