2004–05 Chelsea F.C. season

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

No. Pos. Nation Player 3 DF  NGA Celestine Babayaro (to Newcastle United) 7 FW  ROU Adrian Mutu (released)

No. Pos. Nation Player — MF  ENG Craig Rocastle (to Sheffield Wednesday) — MF  CYP Alexis Nicolas (to Brighton & Hove Albion)

The following players did not appear for the first-team this season.

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

No. Pos. Nation Player 41 GK  BEL Yves Ma-Kalambay[2] 43 MF  ENG Joe Tillen — DF  ENG Michael Mancienne — DF  ENG Adrian Pettigrew — DF  ENG Dean Smith — DF  ENG Sam Tillen

No. Pos. Nation Player — DF  ENG Danny Woodards — MF  ENG Danny Hollands — MF  ENG James Simmonds[3] — MF  ENG Jimmy Smith — MF  GER Sebastian Kneißl

The following players spent most of the season playing for the under-18s, but may have appeared for the reserve team.

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

No. Pos. Nation Player — GK  ENG James Russell[4] — GK  GER Nick Hamann — DF  ENG Joe Anderson — DF  ENG Ed Brand — DF  ENG Shaun Cummings[5] — DF  ENG Ben Hudell — DF  ENG Sam Hutchinson — DF  ENG Harry Worley — MF  ENG Liam Bridcutt[6] — MF  ENG Jack Cork

No. Pos. Nation Player — MF  ENG James Younghusband[7] — MF  POR Filipe Morais — MF  RSA Dean Furman — MF  SOM Hamze Ismail — MF  WAL Andy King — MF  ENG Dean McDonald [8] — FW  ENG Jack Watkins — FW  ENG Phil Younghusband[9] — FW  ITA Michele Gallaccio — FW  ENG Eric Odihambo [10]

Chelsea opened their Premier League campaign at home against a depleted Manchester United side on 15 August 2004. Eiður Guðjohnsen's 14th-minute goal was enough to separate the two sides, 1–0. The result was followed by another 1–0 win a weekend later, this time away at Birmingham City thanks to a strike by substitute Joe Cole. A few days later, Chelsea journeyed across London to Selhurst Park to face newly promoted Crystal Palace. A Didier Drogba debut goal for his new club (a header from a Celestine Babayaro cross) and a controlled, outside-the-box effort by Tiago were enough to ensure a 0–2 win and maintain Chelsea's 100 percent start. Chelsea concluded August with a 2–1 home win over Southampton. James Beattie gave the visitors a shock lead after 12 seconds (the fastest Premier League goal of the season and Chelsea's first conceded); Beattie subsequently scored an own goal at the other end following a Chelsea corner, and a Frank Lampard penalty four minutes short of half-time set Chelsea on their way to all three points, leaving them in second place (behind fellow 100 percenters Arsenal on goal difference).

Due to the international fixtures, Chelsea did not play again until 11 September, dropping their first points of the season in a 0–0 draw at Aston Villa, but both sides were not without their chances to break the deadlock, Drogba having a penalty claim turned down and being booked for diving in the process. A second successive 0–0 draw, at home to Tottenham Hotspur, meant they lost ground on defending champions and leaders Arsenal, falling two points behind. Chelsea later claimed their first win of the month courtesy of a free-kick routine finished by Drogba nine minutes from time away at Middlesbrough one week later to give them a vital 0–1 win. At the end of September 2004, Chelsea were still occupying second place, two points behind Arsenal.

Chelsea began October with yet another 1–0 win, this time against Liverpool, a Joe Cole flick from an inswinging Lampard free kick maintained their unbeaten league start. The run, however, ended after they suffered their first and only defeat of the season away at Manchester City, with Nicolas Anelka stroking home a penalty in the 11th minute that he won himself after being felled in the box by Paulo Ferreira. The result cast Chelsea further behind pace-setters Arsenal, the margin now at five points. Manager Jose Mourinho maintained his optimism regarding his side's performances despite the media bemoaning Chelsea's lack of goals and style of play, particularly in contrast to the verve of unbeaten league leaders Arsenal.

Nonetheless, Chelsea recorded one of their most emphatic victories of the season a week later, winning 4–0 at home against Blackburn Rovers, an Eiður Guðjohnsen hat-trick set them on their way to the win. The result was significant in that it closed the gap to two points, as Arsenal lost their unbeaten record in controversial fashion a day later at Old Trafford, losing 2–0 to Manchester United. Another irrefutable result, a 1–4 win away at West Bromwich Albion, pulled Chelsea level with Arsenal (but behind on goal difference) at the end of October, as the reigning champions were showing signs of faltering, narrowly earning a 2–2 draw that day.

A 1–0 home win against Everton at Stamford Bridge coupled with another draw for Arsenal allowed Chelsea to top the table for the first time in the season. A week later, they retained their two-point lead at the top thanks to a thumping 4-1 away triumph at Fulham. Despite a 2-2 home draw to Bolton, they maintained their table-topping lead after Arsenal could only manage a 1-1 draw themselves to West Brom at home on the same day; Chelsea rounded off November 2004 with a 4-0 thumping of Charlton Athletic at The Valley with Duff, Terry twice and Gudjohnsen all on the scoresheet to see Chelsea move 5 points clear at the top as Arsenal suffered their second defeat of the season at Liverpool the next day.

Chelsea began the new month as they ended the last, with a 4-0 victory, this time at home against Newcastle. In their next outing, they visited rivals Arsenal and despite going behind twice, equalised twice to earn a 2-2 draw at Highbury and preserve their lead at the top of the Premier League. Chelsea won the rest of their December fixtures without conceding: 4-0 vs Norwich, 1-0 vs Aston Villa, and 2-0 away to Portsmouth - to end 2004 sitting atop the Premier League, five points clear of champions Arsenal.

2005 began with a trip to Anfield on New Year's Day, Joe Cole once again proved the difference between the two sides, finding the back of the net five minutes after coming on as a substitute to earn a now-routine 1-0 victory for the visitors. They went on to win all their remaining games in January to nil (2-0 vs Middlesbrough, 2-0 away at Tottenham Hotspur and 3-0 against Portsmouth), extending their commanding lead to 10 points, as rivals Arsenal continued to flounder.

As February dawned, Arsenal lost 4-2 against Manchester United at Highbury, the latter leapfrogging Wenger's Arsenal into second and prompting the Frenchman to rule his side (now 13 points behind leaders Chelsea) out of the title race with Manchester United showing signs of a mid-season surge; nevertheless, Chelsea continued their relentless form, earning a 1-0 win at Blackburn Rovers on 2 February; in doing so, Petr Cech (who saved a penalty late on in the game to ensure Chelsea's victory) set a new record of minutes gone without conceding (781), breaking Peter Schmeichel's record of 695 with Manchester United. The eighth straight win saw the Blues move 11 points clear as their quest for a first Premier League title remained on track.

They later dropped their first points of 2005, a 0-0 stalemate at home to Manchester City, but soon returned to winning ways with a 1-0 away victory at Everton on 12 February, closing the month with a 9-point advantage over second-placed Manchester United.

Chelsea conceded their first goal in 2005, during a 3-1 win at Norwich on 5 March, to end Petr Cech's Premier League record of minutes without conceding at 1,028 (later broken by Edwin van der Sar of Manchester United in 2009). The Blues went on to register a 1-0 win over West Bromwich Albion at home and completed March with a 4-1 victory against Crystal Palace at Stamford Bridge as they closed in on their first league title for 50 years.

The penultimate month of the season opened for Chelsea with a 3-1 away win over Southampton, a well-worked team goal finished off by Eidur Gudjohnsen rounding off the result with seven minutes to spare. A week later on 9 April, Dider Drogba rescued a point for the West Londoners after Walter Pandiani had given Birmingham City a shock lead with half an hour to go at Stamford Bridge; however, their form and results elsewhere conspired to leave Chelsea needing just six points from their last six fixtures of the campaign to be assured of their first-ever Premier League title.

On 20 April, Chelsea played out a goalless draw at home against nearest rivals Arsenal with both sides (particularly the hosts) missing a myriad of opportunities to break the deadlock. But the Blues swiftly rediscovered their touch at Stamford Bridge days later against neighbours Fulham, putting them to the sword with a 3-1 result, Frank Lampard scored the pick of the goals, a crisp low drive inside the area from Arjen Robben's cut-back on the left to restore Chelsea's lead after Collins John had equalised Joe Cole's earlier opener.

The result meant Chelsea could win the title provided closest challengers Arsenal (whose form has picked up considerably towards the season's end) dropped points against Tottenham Hotspur in the North London Derby at Highbury a couple of days later, but the Gunners picked up all three points in a 1-0 win.

Chelsea travelled to Bolton's Reebok Stadium on 30 April 2005 with the knowledge a win and all three points would crown them Champions of England for the first time in half a century, and despite a tense and goalless first-half, the second half saw Lampard win a battle against a defender for a high, bouncing ball just outside the penalty area before making space for a fierce right-foot drive to give Chelsea the lead after an hour gone; it was a lead Chelsea doubled as they countered from a Bolton corner fifteen minutes later, Lampard picking up Claude Makélélé's through ball and rounding goalkeeper Jussi Jääskeläinen, slotting into an empty net for his second goal of the game to seal a conclusive 2-0 win and the league title for the Blues - Mourinho's first in English football - as the Blues sat top of the league with a now-unassailable 11-point lead after 35 games at the end of April 2005.

The final month of the season saw the new champions step on to the Stamford Bridge pitch against Charlton on 7 May, and were made to wait until just moments from time to record a 1-0 victory as Frank Lampard won a penalty in the closing stages, Makélélé (who had never scored previously for the club) was given the honours but scored on the rebound following the save of his initial effort by Charlton goalkeeper Dean Kiely. The game marked Chelsea's final home match of the season, therefore the trophy presentation and post-match celebrations were held afterwards in front of a capacity home crowd.

Three days later, Chelsea travelled to Old Trafford for the penultimate game of the season against third-placed Manchester United, receiving another pre-match guard of honour (customary for their remaining games since clinching the title against Bolton); and in spite of Ruud van Nistelrooy's opening goal, the Blues hit back, notching three times through Tiago, Gudjohnsen and Joe Cole late on to complete a Premier League double over United and claim a record 29th victory of the league season, moving onto 94 points.

Their final league game on 15 May 2005 ended in a 1-1 draw, away to Newcastle United in an inconsequential yet unusually ill-disciplined end-of-season fixture that saw eight yellow cards brandished; the club's top-scorer Frank Lampard scoring from the penalty spot to equalise an own goal by Geremi at the other end minutes earlier.

Chelsea completed their historic campaign with notably new Premier League records of 95 points (12 clear of second-placed Arsenal), 29 wins (14 of them at home - a record in itself), 1,025 consecutive minutes without conceding and just 15 goals conceded - suffering only one defeat all season.