|Full name||Roberto López Esquiroz|
|Date of birth||4 June 1987|
|Place of birth||Estella, Spain|
|Height||1.80 m (5 ft 11 in)|
|2011–2012||→ Elche (loan)||19||(2)|
|2012–2013||→ Mirandés (loan)||27||(2)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 1 April 2018
A product of CA Osasuna's youth ranks, Rúper made his first-team debut on 26 April 2009, playing the last two minutes of a 0–0 away draw against Real Valladolid. During his first full season, as the Navarrese easily avoided La Liga relegation, he provided rest for longtime incumbent holding midfielder Francisco Puñal (12 years his senior).
Rúper spent 2011–12 on loan to Elche CF in the second division, appearing in less than half of the games during the campaign – 12 starts, 1,190 minutes of action. He was released by Osasuna in the summer of 2013 after a loan to fellow league club CD Mirandés, and continued competing in that level with CE Sabadell FC, Real Jaén and Mirandés again.
- Pasito a pasito (Step by step); Marca, 26 April 2009 (in Spanish)
- Rúper, con Puñal como ejemplo (Rúper, with Puñal as an example); Navarra Sport, 19 August 2009 (in Spanish)
- Osasuna cede a Rúper al Mirandés (Osasuna loan Rúper to Mirandés); Marca, 20 August 2012 (in Spanish)