3.30: Signs off Twitter for the afternoon, unable to conceal his excitement: "Cant wait for the game the night #buzzin," he tweets.
6.59: Steps on to the field with Seamus Coleman close by.
7.02: Joins in some low-intensity passing with Coleman, James McCarthy and Shane Duffy away from the starting XI, who have a more demanding warm-up.
7.10: One-on-one passing with Paul Green who is wayward with a number of balls, forcing McClean to retrieve one from a photographer.
7.23: McClean mis-hits a shot at goal and heads for the dressing- room with some friendly ribbing from Duffy in his ear.
7.40: Returns to the field, taking his seat behind Giovanni Trapattoni and Marco Tardelli among the subs.
8.04: Leaves his seat in the dugout to warm up with the other subs.
8.35: Heads down the tunnel with the rest of the team.
8.38: Re-emerges in full tracksuit for a light run and some passing. On the sideline, a leap-year proposal takes place, but there is no love for McClean who resumes his place on the bench.
9.08: With the Czechs now leading, the 22-year-old sits in the dugout while Stephen Hunt and Green warm up vigorously. The signs are not good as the duo are introduced.
9.17: Jonathan Walters and Simon Cox get the nod next as McClean continues to watch on.
9.21: Sent to warm up with 15 minutes remaining then receives instructions from Alan Kelly.
9.24: Hunt blasts a cross behind, allowing McClean to make his debut in place of Aiden McGeady. The No 26 receives the biggest roar of the evening.
9.26: Receives a pass from Sean St Ledger to make his first touch in international football to another massive cheer.
9.29: Wins two headers in quick succession, the second sets Cox up for a pass to Walters who is offside.
9.30: Gets a chance to run at the Czech defence but is dispossessed.
9.33: Celebrates with his team-mates as Simon Cox levels.
9.34: Tries to take on Frantisek Rajtoral but he stops him in his tracks.
9.35: After playing a part in the build-up, McClean makes his most positive contribution so far, whipping in a lethal ball that evades Walters.
9.38: A ball breaks to McClean just outside the box deep into injury-time, but as he winds up for his 'Roy of the Rovers' moment, Tomas Sivok gets across to block.
9.39: The final whistle. McClean applauds the crowd, shakes hands with opponents and officials and leaves the stage a full international.