#3 Watford FC
After a suffering a mid-season slump that culminated in the dismissal of Marco Silva, the Hornets barely escaped relegation in 2017/18, eventually settling for a 14th-place finish in the league, but not without upsetting the likes of Liverpool, Arsenal, Tottenham, Chelsea and Everton.
The team Marco Silva left behind - with a few tweaks, a new direction and Javi Gracia barking orders from the touchline - seem to be enjoying a rollercoaster ride in their first full season under their new manager.
Thus far, the Hornets have been convincing at Vicarage Road - an opening day 2-0 defeat of Brighton and a hard-fought 2-1 win over Crystal Palace - but it is entrancing away victories at Turf Moor vs Burnley, and at Wembley vs Tottenham that have the Watford faithful wearing a smug look wherever they go.
Abdoulaye Doucoure's own goal gifted Pochettino's men the lead but Troy Deeney and Craig Cathcart turned it around for the Yellow army on a marvelous afternoon of Premier League football.
Next up for Watford are Manchester United, Fulham, and Arsenal. It will take a miracle to remain unbeaten after this litmus test, but then, for a club of its size and budget, winning your opening four fixtures, and sitting third in the league after matchday four, is enough indication that a miracle is already underway.
Manchester City and Tottenham are lurking in the dark though, waiting to capitalize on any slip-ups, but as the Premier League takes a break, Liverpool, Chelsea and Watford can breath easy knowing their perfect start to the season could set the tone for a remarkable campaign.