Mumbai Indian innings:
20th over: Mumbai 158 for 7. Ben Hilfenhaus bowls the last over and cleans Malinga up. Smith hits the fourth ball for a six to make it 8 from 2 to win and then smashes the fifth for four and then smacks the last ball for another boundary to win it for Mumbai Indians.
19th over: Mumbai 158 for 7. This is suicidal by Mumbai Indians they are losing wickets like pack of cards. Peterson is run out. du Plessis hits the stumps directly. Meanwhile, Harbhajan Singh also falls trying to go for the maximum.
Dwayne Smith hit unbeaten 24 off 9 balls to help Mumbai clinch a last ball thriller.
Peterson run out (du Plessis) 0(2)
Harbhajan c (sub)Saha b Dwayne Bravo 0(1)
18th over: Mumbai 149 for 5. Jadeja is back into the attack and picks up two in the over. CSK are back in the match as Rayudu and Rohit Sharma are clean bowled.
Rayudu b Ravindra Jadeja 0(2)
Rohit Sharma b Ravindra Jadeja 60(46)
17th over: Mumbai 147 for 3. Dwayne Bravo is back into the attack and Dinesh Karthik after hitting Bravo for two back-to-back fours. He loses his stumps trying to play a nothing shot. MI need 27 from 18 balls.
Dinesh Karthik b Dwayne Bravo 11(5)
16th over: Mumbai 136 for 2. Ashwin is back into the attack and picks up a big big wicket of Sachin Tendulkar thanks to a spectacular catch by du Plessis. Stunning piece of fielding!
Tendulkar c du Plessis b Ashwin 74(44)
15th over: Mumbai 131 for 1. Jakati continues and Mumbai are going berserk at the moment. Sachin and Rohit are dealing in the boundaries at the moment. Fifteen runs from the over as Sachin hits him for two boundaries and Rohit gets one.
14th over: Mumbai 116 for 1. Ravindra Jadeja comes into the attack and Sachin hits him for four off the very first ball through extra cover and follows it up with a two. Mumbai pick up ten from the over.
13th over: Mumbai 106 for 1. Runs are coming easily for Mumbai in the middle. Rohit Sharma hits Jakati for a huge six straight down the ground and MI pick up another eight from the over.
12th over: Mumbai 98 for 1. Ashwin continues and Mumbai pick up another ten from the over that includes one cheeky boundary by Rohit Sharma. Sachin and Rohit are keeping MI in hunt.
11th over: Mumbai 88 for 1. Albie Morkel is back into the attack and Sachin smashes his third ball for four over the cover fielder and then hits his fifth delivery for six over the fine-leg boundary and smashes his last ball for another four to bring up his fifty off just 32 balls.
10th over: Mumbai 74 for 1. Shadab Jakati, comes into the attack and bowls a good over as he restricts batsmen to just four singles of it.
9th over: Mumbai 70 for 1. Bravo continues and MI pick up another nine from the over thanks to boundary by Tendukar off the fifth balls straight down the ground.
8th over: Mumbai 61 for 1. R Ashwin continues and gives away just five from the over. CSK are on top at the moment.
7th over: Mumbai 56 for 1. Dwayne Bravo comes into the attack and gives away ten from the over that includes two boundaries to Rohit Sharma. First one to deep backward point and second one a cut shot.
6th over: Mumbai 46 for 1. R Ashwin comes into the attack and gives eight from the over. After being dropped a delivery earlier, he smashes Ashwin for four straight down the ground.
5th over: Mumbai 38 for 1. Hilfenhaus continues and Mumbai Indians pick 12 from the over thanks to a boundary over the mid-off and a brilliant six over the deep mid wicket boundary by Rohit Sharma.
4th over: Mumbai 26 for 1. Tendulkar is looking in fine form as he hits Morkel for three fours. First one down to backward square leg, second one he slashes it square of the wicket for a boundary and third one over the covers.
3rd over: Mumbai 14 for 1. Hilfenhaus continues and picks up James Franklin. Franklin tries to get under it and tries to launch it over the man at mid-on but give a simple catch to Murali Vijay. Meanwhile, Rohit Sharma gets off the mark with a boundary and then follows it up with a two.
Franklin c Vijay b Hilfenhaus 1(9)
2nd over: Mumbai 8 for 0. Albie Morkel, comes into the attack and Sachin Tendulkar is off the mark with a two and follows it up with a four to fine leg boundary.
1st over: Mumbai 0 for 0. Franklin and Tendulkar are at the crease for Mumbai. Hilfenhaus opens the attack for CSK and bowls an excellent over first up -- a maiden.
Chennai Super Kings innings:
20h over: Chennai 173 for 7. Malinga bowls a good nice over as he gives away just four runs and picks up Ravindra Jadeja as he tries to cut but gives away a simple catch to Franklin at backward point and then in the last ball he picks up R Ashwin.
Ravindra Jadeja c Franklin b Malinga 9(6)
Ashwin c Harbhajan b Malinga 0(1)
19h over: Chennai 169 for 6. RP Singh comes back into the attack and picks up MS Dhoni, who tries to hit the ball out of the park but Rohit Sharma picks up a smart catch at long on fence. Meanwhile, Ravindra Jadeja comes into the crease and hits him for a six straight over his head. But RP comes back well and clean bowls Albie Morkel off the last ball.
Dhoni c Rohit Sharma b RP Singh 25(15)
Albie Morkel b RP Singh 3(3)
18th over: Chennai 160 for 4. Malinga comes into the attack and Bravo takes the attack to him. Hits him for two back-to-back fours. One through the fine-leg and second through the extra cover. But Malinga comes back superbly and clean bowls him with a deadly yorker.
Dwayne Bravo b Malinga 40(33)
17th over: Chennai 149 for 3. Munaf Patel is back into the attack and after giving three off first three, Bravo smashes his fourth ball for a six over the long on. Gives eleven from the over.
16th over: Chennai 138 for 3. Robin Peterson is back into the attack and Dhoni smashes him for a huge six over the long on and then follows it up with a boundary towards the backward point. Chennai are surely eying 180 plus.
15th over: Chennai 123 for 3. James Franklin comes into the attack and picks up Sures Raina off his very first ball. A brilliant catch by RP Singh at backward point. Meanwhile, MS Dhoni walks in the middle and gets off the mark with a boundary off the first ball he faces. Nine runs come from the over.
Raina c RP Singh b Franklin 36(21)
14th over: Chennai 114 for 2. Munaf Patel after giving 27 off his first two overs is back into the attack and Dwayne Bravo cuts his second ball fine of the fine-leg fielder to get a boundary and the duo pick up four singles from the rest of the over to make it eight from the over.
13th over: Chennai 106 for 2. Dwayne Smith continues and Raina hits his first ball for a massive six over the deep midwicket boundary and then hits him for a boundary off the last ball through the point region to make it 14 from the over.
12th over: Chennai 92 for 2. Harbhajan continues and gives seven from the over in ones and twos. CSK are in a very good position to go and put a good total on board.
11th over: Chennai 85 for 2. Dwayne Smith comes into the attack and Raina hits him for four to third man off the second ball of the over and hits him for a huge six over long on to make it thirteen from the over.
10th over: Chennai 72 for 2. Harbhajan continues and another tight over by the offspinner. He restricts batsmen to just four singles off the over.
9th over: Chennai 68 for 2. RP Singh continues and Raina hits his second ball for four to backward square leg. Meanwhile, Bravo gets two off the fourth ball to make it eight from the over.
8th over: Chennai 60 for 2. Harbhajan Singh, comes into the attack and bowls a pretty nice and tight over. Gives away just two singles and a wide off it.
7th over: Chennai 57 for 2. RP Singh is back into the attack and picks up a important wicket of dangerous looking Murali Vijay. RP clean bowls the batsmen who tries to go for a expansive drive but misses the ball completely. Dwayne Bravo comes into the crease and open his account with a boundary.
Vijay b RP Singh 41(29)
6th over: Chennai 52 for 1. Finally a wicket for Mumbai Indians thanks to a run-out and misunderstanding between the batsmen. RP Singh hits direct at the bowler's end.
du Plessis run out (RP Singh) 9(11)
5th over: Chennai 46 for 0. This is fantastic stuff by Murali Vijay. He smashes Munaf Patel for three sixes and a boundary in this over. First six was over the square-leg, follows it up with a boundary straight down the ground and then smashes two back-to-back sixes over deep square-leg and long-on.
4th over: Chennai 22 for 0. Lasith Malinga, comes into the attack and another tight over by Mumbai Indians. Malinga gives away just three singles and wide from the over. This has been a tentative start by Chennai openers.
3rd over: Chennai 18 for 0. Munaf Patel, comes into the attack and bowls a good over and is unlucky. A straightforward catch at short fine-leg is put down by RP Singh. Just three from it.
2nd over: Chennai 15 for 0. RP Singh in action and Murali Vijay looks ill at ease against him. Faf du Plessis takes a three off the last ball.
1st over: Chennai 7 for 0. Robin Peterson opens the bowling for Mumbai and Murali Vijay takes a four off the first ball. Beautifully driven through the covers. The rest of over is relatively quiet with a double and a single.
3:45 p.m. No change for Chennai, though Dhoni admits that he and Raina are a bit unfit. Mumbai have brought in RP Singh and Dwayne Smith.
Mumbai Indians: James Franklin, Sachin Tendulkar, Rohit Sharma, Ambati Rayudu, Dinesh Karthik (wk), Dwayne Smith, Robin Peterson, Harbhajan Singh (capt), Lasith Malinga, RP Singh, Munaf Patel
Chennai Super Kings: Murali Vijay, Faf du Plessis, Suresh Raina, MS Dhoni(capt/wk), Ravindra Jadeja, Albie Morkel, Dwayne Bravo, S Badrinath, Ravichandran Ashwin, Shadab Jakati, Ben Hilfenhaus
3:30 p.m. Harbhajan Singh wins the toss and Mumbai Indians are bowling. Both captains wanted to bowl as both are uncertain how the fresh track would play.
3:15 p.m. If it were last year, we would have touted today's battle at the Wankhede as the one between the top contenders of the IPL. But this is not 2011. We are in 2012 and this is IPL 5, and the form of defending champions Chennai Super Kings and CLT20 winners Mumbai Indians is nowhere near as any of the previous four seasons.
While the two big guns have somehow managed to stay in the top four at this juncture, their form doesn't instil any confidence in their fans. But a win today will do a world of good to not only their chances for the playoffs but also to win back the fans they seem to be losing fast.
Talking about the match prospects, here is our preview that you can dig into as we approach time for the all-important toss.