Jose Mourinho loses his second match on the trot as the Swiss side grew in the second half to beat the Premier League outfit after Oscar broke the deadline just before half-time.

Six years to the day after a 1-1 draw with Rosenborg that represented the final game of Mourinho’s first spell in charge at Stamford Bridge, Chelsea were stunned by second-half goals from Mohamed Salah and Marco Streller.

Oscar fired the hosts ahead in the 45th minute in the Group E clash with his sixth goal in seven Champions League outings and the Brazilian also hit the bar prior to Salah’s classy left-footed leveller.

That goal prompted Chelsea to throw men forward, yet it was Basel – always dangerous on the break – who struck again when Streller beat Petr Cech with a near-post header from a corner.

Willian was handed his Chelsea debut and Marco van Ginkel a first start as Mourinho made five changes from the side beaten 1-0 by Everton at the weekend.

Basel recalled a host of players after fielding a weakened side for their Schweizer Pokal victory against Munsingen.

Mourinho’s men unsurprisingly started the game on the front foot, albeit without creating any clear-cut opportunities.

There was a scare for Basel goalkeeper Yann Sommer in the 15th minute when he fumbled a corner from the left, but a free-kick was swiftly awarded in his favour.

The pacey Salah – a scorer at Stamford Bridge in last season’s Europa League semi-final between the two sides – represented the main threat when Basel launched occasional attacks.

After Eden Hazard had spurned a rare clear sighting of goal for Chelsea following good work from Samuel Eto’o, Salah also proved wasteful when cutting in from the right and curling a shot over the bar.

Despite dominating possession and the corner count, the hosts remained frustrated as half-time approached.

However, Chelsea were lifted on the stroke of the interval as Oscar popped up with a timely goal.

David Luiz set the attack in motion by stepping into midfield and Oscar latched on to a delicate throughball from Frank Lampard to find the bottom-left corner with a first-time shot on the turn.

Streller was close to connecting with a left-wing cross early in the second half before Oscar struck the bar at the other end with a tremendous effort from just outside the area.

Hazard failed to hit the target once again either side of Branislav Ivanovic twice threatening from set-pieces.

Chelsea were then punished for not extending their lead when a cross from the left broke via Streller to Salah, who emulated Oscar by only requiring one touch to find the net.

Although Chelsea poured forward in search of a late winner, it was Basel who finished the stronger and their encouraging play gained reward as Streller shocked the home crowd.

According to Goal