3: Chelsea 2-3 Burnley, 2017/18
Antonio Conte's Chelsea side had cruised to a fairly comfortable Premier League title in 2016/17 in what was the Italian's first season in charge.
The club had finished on 93 points, losing only five games on their way to glory, but their defence of the title could not have gotten off to a worse start.
Sean Dyche's Burnley were the first team to face the defending champions last season, in what many fans expected to be a fairly comfortable victory.
Fans who were expecting the game to be one-way traffic were correct, except, everything was going Burnley's way, not Chelsea's.
Things got off to a bad start for The Blues when Gary Cahill saw red for them inside the first fifteen minutes, but they were stunned 10 minutes later when Sam Vokes opened the scoring. Things would get worse from there, with Stephen Ward adding another just before the 40-minute mark, and Vokes securing his brace on the stroke of half-time. Stamford Bridge was stunned as the scoreline was Burnley 0-3 Chelsea at half-time.
Chelsea would mount a comeback of sorts in the second half, with debutant Alberto Morata scoring with 20 minutes to go, only for Cesc Fabregas to become the team's second player to receive a red card of the day. David Luiz would then score in the 88th to set up a tense finale, but the champions didn't have enough in the tank.
The reigning champions never really recovered from their opening day embarrassment and would go on to finish fifth, 30 points behind champions, Manchester City. Burnley, on the other hand, continued to defy the odds, finishing 7th and securing themselves a spot in the Europa League.