Saturday was not the only time Chelsea have started a match quickly this season but even for Alonso's men this was special: it was the first time in Premier League history that we have been 2-0 up before there were even two-and-a-half minutes on the clock.

Jordan Henderson and Morgan Rogers' curled strikes gave us the perfect opening and then Joao Pedro continued the theme of fast starts with a goal just 30 seconds after the restart.

The Brazilian's second midway through the second half, swiftly followed by Henderson's sublime free-kick, meant Evanilson's consolation on 51 minutes was a minor blip in an otherwise 'complete performance', in the words of Alonso.

Here we look at some of the key factors behind another memorable win at the Bridge...

(Stats below are prior to Sunday's fixtures)

No one starts faster

Saturday was not a one-off. The Blues have continually come flying out of the traps this season. We have scored in the opening seven minutes of five of our six Premier League games this term. The only match where we didn't was our 3-0 defeat to Brentford, when we didn't score.

The six goals in the opening seven minutes account for 40 per cent of our 15 Premier League goals, and incredibly we have been ahead within two minutes in half our league matches so far.

Chelsea's early goals
Fulham 2-3 Chelsea - Joao Pedro 1' (32 secs)
Chelsea 4-3 Brighton - Lavia 4'
Arsenal 2-1 Chelsea - Rogers 2'
Chelsea 2-2 Hull City - Rogers 7'
Chelsea 5-1 Bournemouth - Henderson 2', Rogers 3'

Unsurprisingly, our five goals inside the opening five minutes of our first six Premier League games cannot be matched. In fact, the only other team to score in that time frame is Newcastle United, who have found the net twice.

It isn't just limited to the start of the match either. We have scored early in the beginning of the second half also. If you include our two EFL Cup wins, we have scored five goals within ten minutes of the restart in four of our eight matches in all competitions.

Chelsea goals between minutes 46-55
Fulham 2-3 Chelsea - Palmer 49'
Chelsea 2-0 Luton - Welbeck 50'
Chelsea 6-3 Leeds - Palmer 53', 55'
Chelsea 5-1 Bournemouth - Joao Pedro 46'

Clinical Blues

Only Brighton (18) have scored more Premier League goals than Chelsea so far this season (prior to Sunday's fixtures), and one of the reasons for that is just how ruthless we have been in front of goal.

Expected goals (xG) measures the quality of a team’s chances by estimating how likely each shot is to result in a goal, based on factors such as distance and angle. Overperformance is the difference between the goals actually scored and that expected total.

As the graphic below shows, Chelsea have scored 15 Premier League goals from chances worth 8.4 xG, outperforming that figure by 6.6 — the largest margin of any team in the division this season.

The quality of our finishing against Bournemouth was undeniable. All five of our goals had a combined xG total of 0.75, with the Blues generating 1.1 xG across the 90 minutes compared to Bournemouth's 1.38.

1-0 - Henderson (0.05)
2-0 - Rogers (0.05)
3-0 - Joao Pedro (0.13)
4-1 - Joao Pedro (0.46)
5-1 - Henderson (0.07)

Again, Saturday was not an outlier. Rogers' goals against Arsenal (0.02) and Hull City (0.09), and Cole Palmer's finishes against Fulham (0.09) and Brighton (0.06), had xG values of less than 0.1, meaning eight of our 15 Premier League goals this season have come from shots with an xG below 0.13.

When you look at the more traditional metric of shot conversion - so the percentage of a team’s shots that result in goals - only Manchester City have a higher rate. Our 15 goals from 82 Premier League attempts this season effectively mean we have scored, on average, one goal for every five-and-a-half shots we have taken.

Joao Pedro leads the way

Chelsea's No.9 needed just two shots to score twice against Bournemouth, providing a perfect example of the ruthlessness he has shown all season.

His 25 touches in the 72 minutes he played were the fewest of any starter for the Blues, but his movement and finishing once again highlighted why he is one of the most in-form strikers in Europe.

No one in the Premier League has more goal contributions - goals and assists combined - this season, with Joao Pedro scoring five and registering three assists. Pascal Gross is second with three goals and four assists. Morgan Rogers (4+1) and Cole Palmer (2+3) are among those who are joint third.

Joao Pedro also has the highest conversion rate in the Premier League among players with at least three goals, at 38 per cent. His five strikes have come from just 13 attempts, and his average of a goal every 86 minutes also leads that group.

Henderson's complete performance

After missing the start of the season through injury, Saturday saw Henderson make his home debut for Chelsea, and he certainly didn't disappoint.

The 36-year-old's leadership qualities and tactical awareness are beyond reproach, but the Mackem's performance reiterated there is so much more to his game.

On Saturday, he showed his goalscoring threat with two superbly well-taken finishes from outside the box, grabbed an assist for Rogers' goal, and only Levi Colwill (82) had more touches than Henderson's 79.

Among Chelsea players, he attempted the most shots (three), the most crosses (four), and was joint second with Moises Caicedo for completed passes (53) behind Colwill (71).

Henderson also did plenty of the dirty work you would expect from an experienced midfielder: showing tactical awareness to intercept through-balls and block crosses. It was a complete midfield performance.