[4] At the beginning of the 2017–18 season, Brendan Rodgers promoted Hazard to the Celtic first-team squad as third choice goalkeeper behind Craig Gordon and Dorus de Vries.

[8] He helped his side reach the quarter-finals of the Scottish Cup, taking Hearts to a replay where Hazard saved a penalty kick but conceded a late goal, the team ultimately losing 2–1 to exit the tournament.

[11] After impressing Dundee manager James McPake during his short stint with the club, Hazard was brought back to the Dark Blues on loan for the rest of the season in January.

[17][18] The Northern Irishman subsequently made five appearances in the Scottish Premiership, due to a goalkeeping crisis that involved both the original starter, Vasilis Barkas, and his second-choice, Scott Bain: one of the factors that cost Celtic their tenth consecutive title, as rivals Rangers won the league, instead.

[19] Ever since the start of the 2021–22 season, with the appointment of Ange Postecoglou as the new Celtic manager, Hazard found himself at the bottom of the pecking order between the sticks of the Hoops (together with Barkas), as Joe Hart became the first-choice goalkeeper immediately after his signing, with Bain being confirmed as the main reserve and Tobi Oluwayemi being promoted to the first team.

[19] After staying in Glasgow for the first part of the season, as he made the match-day squad on a few occasions, on 19 January 2022 Hazard officially joined Finnish side HJK Helsinki on loan for the rest of year.

[28] On 9 February 2025, Hazard achieved a career highlight in the FA Cup after keeping a clean sheet in a victory over Premier League side Liverpool, when he made two key saves against Diogo Jota's volley and Darwin Núñez's close-range header in injury time to ensure Plymouth advance into the next stage of the competition.