Feyenoord
Born in Brazil, Hamer moved to the Netherlands as a child. As a youth player he was rejected by ADO Den Haag before joining Feyenoord's youth academy. [3] He progressed well at Feyenoord, and earned caps for both the Netherlands U18 and U20 sides. [4] Hamer made his professional debut on 2 April 2017 in an Eredivisie match against Ajax, coming on as an 89th-minute substitute in a 2–1 loss. [5] Three days later, on 5 April 2017, he would make his second and what would prove to be last appearance for Feyenoord in an 8–0 win against Go Ahead Eagles. [6]
Loan to Dordrecht
On 7 August 2017, Eerste Divisie club Dordrecht announced the signing of Hamer on a one-year loan deal. [7] He made 39 appearances in all competitions for Dordrecht as they missed out on promotion after qualifying for the playoffs. [8]
Coventry City
On 3 July 2020, Hamer signed for Coventry City from Dutch club PEC Zwolle for a fee reported to exceed £1.5 million. [17] [18] He made his debut on 5 September, starting in a 1–0 victory over Milton Keynes Dons in the EFL Cup. [19] Hamer quickly became an important member of the side following Coventry's promotion to the Championship. In his fifth appearance, a 3–1 defeat against Bournemouth, he was sent off for violent conduct, resulting in a three-match suspension. [20] He returned against Middlesbrough on 27 October and scored his first goal for Coventry three days later in a 3–2 victory over Reading. [21] [22] He finished the 2020–21 season with five league goals and three assists in 42 appearances as Coventry finished 16th.
During the 2021–22 season, Hamer continued to play a central role in midfield, combining his passing and creativity with an increased contribution in attack. He recorded three goals and ten assists in 39 Championship appearances as Coventry finished 12th, their highest league position since returning to the second tier. His performances made him one of the team's principal creative outlets, particularly through his ability to progress the ball and create chances from midfield.
Hamer produced his most productive season for Coventry during the 2022–23 campaign, scoring nine goals and providing 11 assists in 41 league appearances. His performances helped Coventry finish fifth in the Championship and qualify for the play-offs. He scored in the final league match of the season, a 1–1 draw away to Middlesbrough on 8 May 2023, which confirmed Coventry's place in the play-offs. [23]
In the play-off semi-final second leg against Middlesbrough on 17 May, Hamer scored the only goal of the match in the 57th minute, controlling a pass from Viktor Gyökeres before finishing into the net. The 1–0 victory gave Coventry a 1–0 aggregate win and sent them to Wembley for the Championship play-off final, their first appearance at that stage since 1997. [24] In the final against Luton Town on 27 May, Hamer scored Coventry's equaliser in the 66th minute after Gyökeres crossed from the left. The match finished 1–1 after extra time, but Coventry lost 6–5 in the penalty shoot-out, missing out on promotion to the Premier League. [25] He ended the season with 11 league goals, including his two decisive strikes in the play-offs, and was widely recognised as one of Coventry's key players during their promotion campaign.
Hamer began the 2023–24 season with Coventry, making one Championship appearance before joining Sheffield United in August 2023. He had made 122 Championship appearances for Coventry, scoring 17 goals and providing 24 assists, in addition to his contributions in cup and play-off matches.
Sheffield United
On 12 August 2023, Hamer signed a four-year contract with newly promoted Premier League club Sheffield United for an undisclosed fee, reported to be around £15 million. [26] [27] [28] He scored on his Premier League debut on 18 August, in a 2–1 defeat away to Nottingham Forest, striking a volley from outside the penalty area. [29] He finished his first season with four league goals and six assists in 36 appearances, although Sheffield United were relegated after finishing bottom of the table.
Following Sheffield United's return to the Championship, Hamer was named the division's Player of the Season on 27 April 2025 after scoring nine goals and providing seven assists in 41 league appearances during the 2024–25 season. [30] Sheffield United finished third and reached the play-off final, where they lost 2–1 to Sunderland. Hamer remained with the club for the 2025–26 season, scoring five league goals and providing 12 assists in 37 appearances.
