Incredible chance for Sam Kerr to seal victory, but the Australian spurns the opportunity.

Played in behind the defence, she gets into the box but sends her right-footed effort across goal and wide of the post.

Will the Blues rue that moment?

Another throw of the dice by Bayern as Simone Laudehr comes on for Amanda Ilestedt.

Chelsea slow things down as Erin Cuthbert comes on for Melanie Leupolz.

Chelsea may be on top but they have to stay alert in the closing stages.

If Bayern Munich score next, they'll progress on away goals.

Can Emma Hayes' side keep their composure?

A chance for Chelsea to work a set piece as Lineth Beerenstyen clatters into Jess Carter just outside the box on the right.

The Bayern players deservedly goes into the book.

Another important block in the Blues defence, as Magdalena Erkisson gets in the way of a shot from Linda Dallmann inside the box.

Chelsea's attack gets going as Pernille Harder, Fran Kirby and Sam Kerr mount a counter attack.

Kirby crosses from the right but the ball is nodded behind by Carina Wenninger, with Kerr lurking.

Ten minutes plus stoppages to go, and nothing to separate these two sides.

If it stays like this, we'll head for extra time.

A Bayern goal now would almost end Chelsea's hopes, as the Blues would need to score twice.

Almost a freak own-goal by Melanie Leupolz as she pings a back-pass to Ann-Katrin Berger.

It's overhit and nowhere near the Chelsea keeper.

Fortunately for the hosts, it also bobbles a few yards wide of their goal.

Carolin Simon can't continue and Carina Wenninger takes her place in the away defence.

Bayern take the opportunity to make a double change, as Viviane Asseyi comes on for Sydney Lohmann.

Chelsea boss Emma Hayes is yet to use her bench.

Ji So-yun swings in the free-kick from the right but Bayern are awarded a free-kick for a challenge on the keeper.

There didn't look much in it, but referee Esther Staubli saw enough to ping her whistle.

There's a brief break in play after that challenge.

Time for the Chelsea players to take on liquids and get some instruction from Emma Hayes and the home bench.

Carolin Simon is clutching her right ankle and looks in pain.

Cross into the box by Sam Kerr on the Chelsea right, but it's hacked away by a Bayern defender.

Moments later Kerr is brought down by Carolin Simon out wide.

The German left-back is injured and will need some treatment before continuing.

She'll also get a yellow card for her troubles.

Ball lofted into the Bayern box from halfway by Magdalena Eriksson looking for Sam Kerr.

Visiting keeper Laura Benkarth claims fairly comfortably.

Chelsea need to get a foot on the ball and build a platform to launch an attack.

Good block by Mille Bright to stop a shot from Bayern's Lineth Beerensteyn outside the box.

The visitors continue to threaten the Blues defence.

Chance for Chelsea as Pernille Harder breaks free on the left.

The cross comes in and drops to Sophie Ingle on the edge of the box, but the Welsh midfielder doesn't strike it cleanly and her shot is blocked by a defender.

Better from the Blues.

Niamh Charles looks to help mount a rare Blues attack in this second half but the left-back is crowded out on the left flank and runs out of pitch.

The hosts have come under pressure since the restart.

As things stand, we're still heading for extra-time.

The German side threaten again as Linda Dallmann is immediately involved.

She gets to the byline inside the area and her cut-back is blocked by Magdalena Eriksson.

Blues keeper Ann-Katrin Berger gets a touch to the resulting corner to help the ball behind.

First change of the game, and it's Bayern boss Jens Scheuer who blink firsts.

Linda Dallmann comes on for Lea Schuller.

Aside from claiming crosses and mopping up, neither keeper has really been called into many saves so far this afternoon.

Chelsea's first was a fine counter-attack and Bayern keeper Laura Benkarth was unsighted for their second.

Ann-Katrin Berger didn't have a chance with the visitors' goal either.

The game is still being played with intensity, so I'm sure they'll both have work to do before the game is up.