2013 Knoxville Challenger – Doubles

Alex Kuznetsov and Mischa Zverev were the defending champions, but Zverev chose not to compete.Kuznetsov partnered with Denys Molchanov but lost to eventual champion Samuel Groth and John-Patrick Smith in the semifinals, who also defeated Carsten Ball and Peter Polansky in the final.

2013 Knoxville Challenger – Doubles

Alex Kuznetsov and Mischa Zverev were the defending champions, but Zverev chose not to compete.Kuznetsov partnered with Denys Molchanov but lost to eventual champion Samuel Groth and John-Patrick Smith in the semifinals, who also defeated Carsten Ball and Peter Polansky in the final.