2018 Citi Open – Men's singles

Men's singles
2018 Citi Open
Champion Alexander Zverev
Runner-up Alex de Minaur
Score6–2, 6–4
Draw48 (6Q / 4WC)
Seeds16

Alexander Zverev was the defending champion and successfully defended his title, defeating Alex de Minaur in the final, 6–2, 6–4.