Martin Valjent

Valjent made his professional debut for Ternana on 28 September 2013. He signed for Chievo Verona in 2017, only to be sent on loan to his former club for the 2017–18 Serie A.

Mallorca

In August 2018, Valjent moved on loan to Mallorca to reinforce the Balearic defense during the 2018–19 Segunda División campaign. He debuted

On 26 June 2019, following Mallorca's promotion to La Liga, he was bought permanently for €1.5 million, signing a contract until 2025.

On 25 February 2014, Valjent played his 200th professional match after a 1-1 draw against Deportivo Alavés.

Valjent was first called up to the Slovakia national team by Ján Kozák sr. for fixtures against Netherlands and Morocco on 31 May and 4 June 2018 respectively. This was done due to Gyömbér and Štetina's injuries. Valjent debuted during a match against Morocco in Geneva, replacing Tomáš Hubočan in the 79th minute.

Valjent's first competitive start came in a Euro 2020 qualifying fixture against Croatia on 6 September 2019 in Trnava, with Valjent playing as a right-back. Slovakia lost the game 4–0. It was that Valjent had a difficult task in defending Dejan Lovren at the side-line, as his preferred post is the one of a centre-back. In October, Valjent returned to the national team in a friendly match against Paraguay on his preferred post. His performance was reported on very positively, receiving praise from RTVS' commentary expert Marián Zeman during the farewell game for Martin Škrtel, with whom he starred in the starting XI, as well as Hubočan and Adam Nemec. This game also coincided with a return to Tehelné pole after some ten years and concluded with a 1–1 tie.

On 26 August 2020, Valjent was called up by the Slovak senior squad to take part in the two opening matches of the UEFA Nations League against the Czech Republic and Israel.

Club

As of match played 27 August 2021