2015 Estoril Open

The 2015 Estoril Open (also known as the Millennium Estoril Open for sponsorship purposes) was a tennis tournament played on outdoor clay courts. The 2015 tournament was the first edition of the Estoril Open (which replaced the Portugal Open), and part of the ATP World Tour 250 series of the 2015 ATP World Tour. The event took place at the Clube de Ténis do Estoril in Cascais, Portugal, from April 25 through May 3, 2015.

Seeds

 * Rankings are as of April 20, 2015.

Other entrants
The following players received wildcards into the singles main draw:
 * Gastão Elias
 * Rui Machado
 * Frederico Ferreira Silva

The following players received entry from the qualifying draw:
 * 🇫🇷 Kenny de Schepper
 * 🇫🇷 Constant Lestienne
 * 🇦🇹 Martin Fischer
 * 🇪🇸 Roberto Carballés Baena

The following player received entry as a lucky loser:
 * 🇪🇸 David Vega Hernández

Withdrawals

 * Before the tournament
 * 🇨🇾 Marcos Baghdatis →replaced by Stéphane Robert
 * 🇦🇷 Carlos Berlocq →replaced by Robin Haase
 * 🇫🇷 Adrian Mannarino →replaced by Alejandro González
 * 🇪🇸 Tommy Robredo →replaced by David Vega Hernández

Seeds

 * Rankings are as of April 20, 2015.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * João Domingues / Pedro Sousa
 * Rui Machado / Frederico Ferreira Silva

Singles

 * 🇫🇷 Richard Gasquet def. 🇦🇺 Nick Kyrgios, 6–3, 6–2

Doubles

 * Treat Huey / 🇺🇸 Scott Lipsky def. 🇪🇸 Marc López / 🇪🇸 David Marrero, 6–1, 6–4