Íñigo Sainz-Maza Serna (born 16 June 1998) is a Spanish professional footballer who plays as either a right back or a midfielder for Racing de Santander.
He made his senior debut with the reserves on 21 February 2016, playing the last eight minutes in a 3–0 Tercera División away win over SD Gama.
Sainz-Maza scored his first senior goal on 21 October 2017, netting the opener in a 1–1 home draw against SD Solares-Medio Cudeyo.
[2] He made his first team debut on 19 May 2019, starting in a 2–2 home draw against UD Logroñés in the Segunda División B, as his club was already qualified to the play-offs.
[4] He was a regular starter for the club during the 2021–22 campaign, scoring once and acting as team captain as his side achieved promotion back to Segunda División.