Mumbai Indians are favourites to claim a historic third successive Indian Premier League crown back on home soil.

The Indians retained their title in Dubai last year with a victory over Delhi Capitals, taking their record tally of IPL triumphs to a five.

Rohit Sharma's side will be the team to beat in a competition that will be played in Ahmedabad, Bengaluru, Chennai, Delhi, Mumbai and Kolkata, having been staged overseas in 2020 due to the coronavirus pandemic.

The Capitals and Royal Challengers Bangalore look the most likely sides to prevent Mumbai from becoming the first franchise to win three consecutive IPL titles.

We pick out some of the things to look out for in what promises to be a mouthwatering extravaganza of cricket, which starts on Friday in a country that will stage the T20 World Cup later this year.

INDIANS PRIMED FOR THREE IN A ROW

The champions start the defence of their title with a blockbuster showdown against RCB in the first game of the tournament at M. A. Chidambaram Stadium in Chennai.

Mumbai will have to wait for Quinton de Kock's arrival as he is on duty with South Africa, so skipper Rohit will be expected to set the tone at the top of the order.

The India opener is the fourth-highest run-scorer in IPL history with 5,230 at an average of 31.31 and, although the 2020 edition was not one of his best, he struck a rapid 68 in the final. Ishan Kishan and Suryakumar Yadav played significant hands with the bat in Mumbai's 2020 success.

Trent Boult was man of the match in that win over Delhi after taking 3-30 and the New Zealand seamer will have a big part to play with the ball along with Jasprit Bumrah.

STAND-IN SKIPPER PANT CAN LEAD BY EXAMPLE

Delhi's first IPL final proved to be painful in November, but they will fancy their chances of going one better under the captaincy of Rishabh Pant.

The addition of Steve Smith, who was released by Rajasthan Royals, is a major tonic, while Umesh Yadav and Sam Billings are among their other new recruits.

Kagiso Rabada was the leading wicket-taker in last year's tournament with 30 at 18.26 and Delhi will need him to fire again along with fellow Proteas quick Anrich Nortje.

Ravichandran Ashwin should be on a high from his Test exploits for India against England, while the in-form Pant can thrive as skipper with Shreyas Iyer ruled out due to a shoulder injury.

MORRIS UNDER PRESSURE TO JUSTIFY PRICE TAG

Chris Morris became the most expensive signing in IPL history when he was snapped up by Rajasthan Royals for 16.25crore (around £1.6million).

That staggering fee put the South Africa all-rounder ahead of Yuvraj Singh (16cr) as the biggest ever auction acquisition.

Morris was 20th on the list of the leading wicket-takers last year when featuring for RCB and only batted five times, with a top score of 25 not out.

ROY TO REUNITE WITH BAIRSTOW

England batsman Roy went unsold at auction but was drafted in by Sunrisers Hyderabad last week after Mitchell Marsh withdrew for personal reasons.

Sunrisers coach Trevor Bayliss was clearly excited by the prospect of Roy and Jonny Bairstow forming a pairing that has served England so well.

Roy may have to wait for his opportunity or Sunrisers could tinker with the order, as captain David Warner and Bairstow have formed a dangerous opening pairing.

Justin Langer says there is "no captaincy position available" for Steve Smith after the former skipper expressed his desire to lead Australia again.

Smith's reign as Australia captain ended when he was banned from international cricket for a year and prevented from taking a leadership role for his country for two years due to the 2018 Newlands ball-tampering scandal.

Tim Paine took over as Test skipper and Aaron Finch white-ball captain, but Smith stated that he wants another chance to take charge again.

"I've certainly had a lot of time to think about it and I guess now I've got to a point where if the opportunity did come up again, I would be keen," the 31-year-old told News Corp.

"If it was what Cricket Australia wanted and it was what was best for the team at the time, it's certainly something I would be interested in now, that's for sure,"

He added: "Time keeps moving forward, and I've learnt so much the last few years about myself and grown as a human being.

"I feel as though I'd be in a better place if the opportunity did come up. If it doesn't, that's fine as well and I'd support whoever is in charge the same way I've supported Tim and Finchy. I haven't always felt like I wanted to do it again. That's only come in the last little bit."

Yet Australia head coach Langer says both Paine and Finch are secure in their positions.

"We have two very good captains and two important competitions coming up – an Ashes and a T20 World Cup. Our future looks good," he told the ABC.

"Despite the media chatter there is no captaincy position available."

Chris Morris became the most expensive signing in the history of the Indian Premier League as franchises filled out their rosters during Thursday's auction in Chennai. 

Morris was eventually signed by Rajasthan Royals - who he played for in 2015 - following a bidding war that saw four teams battling it out to secure the services of the South African all-rounder. 

His final price finished up at 16.25crore, which equates to around £1.6million, putting him ahead of Yuvraj Singh (16cr) on the list of biggest auction purchases in the global Twenty20 tournament.

"I'm super-stoked, super-humbled to be joining Rajasthan again," Morris said in a video message posted by his new team on Twitter.

"I had an unbelievably good time, and a good season, one of the better times in my cricket career, with Rajasthan in 2015, so I'm unbelievably happy, unbelievably excited.

"We have a very good squad, so joining up with Rajasthan is a very cool experience."

Royal Challengers Bangalore were big spenders in their bid to secure a maiden title this year, getting New Zealand paceman Kyle Jamieson for 14.25cr (£1.5m) having already signed Australia all-rounder Glenn Maxwell (14cr - £1.4m) for a fraction less than that earlier in proceedings. 

Jhye Richardson also collected a huge deal, snapped up for the same price as compatriot Maxwell by Punjab Kings, who added another Australian paceman to their roster in Riley Meredith, who has yet to play international cricket in any format. 

Having been released by Rajasthan Royals at the start of this year, Steve Smith is now a member of the Delhi Capitals, along with India fast bowler Umesh Yadav and Englishman Sam Billings. 

Moeen Ali saw a considerable rise from his base price, the England all-rounder eventually going for a final sum of £700,000 to Chennai Super Kings. 

While a premium was paid for pace bowling during the auction, the market was a little less frantic for batsmen. 

Dawid Malan – who sits top of the International Cricket Council's batting rankings in the shortest format – will play for Punjab Kings, but English openers Alex Hales and Jason Roy both went unsold. 

Bangladesh all-rounder Shakib Al Hasan is heading back to the Kolkata Knight Riders for 3.2crore (£315,000), while Krishnappa Gowtham went for 9.25crore (£900,000) to the Super Kings, making him the most expensive uncapped India player ever.

As for Mumbai Indians, the main additions by the two-time defending champions came to their bowling attack as they added Adam Milne, Nathan Coulter-Nile and leg-spinner Piyush Chawla. 

The 14th edition of the IPL is scheduled to begin during April and run into May. Last year's delayed tournament was staged in the United Arab Emirates due to the coronavirus pandemic.

Australia coach Justin Langer slammed the criticism of Steve Smith, labelling it a "load of rubbish".

Smith was questioned after footage showed him standing at the crease and shaping up as if he was batting, including marking a guard, as India survived for a draw on the final day of the third Test in Sydney.

His actions at the crease forced India's Rishabh Pant to retake his own guard before play resumed, with the moment becoming a hot topic on Twitter.

But Langer hit out at the talk about Smith, who was sacked as Australia captain and banned for 12 months following the ball-tampering scandal during the tour of South Africa in 2018.

"I literally cannot believe some of the rubbish I read about Steve Smith, absolute load of rubbish," he told a news conference on Wednesday.

"If anyone knows Steve Smith, he's a bit quirky. We've all laughed about it for the last couple of years and I've spoken about it privately about how he's a bit quirky. What Steve Smith does at the crease, he does it probably most games, he's just thinking about the game.

"Anyone who suggests for one millisecond he was trying to do something untoward, way out of line, absolutely out of line. On that wicket, it was that flat, and it was like concrete, you need 15-inch spikes to make an indent on the crease and he went nowhere near the crease.

"I thought that was absolutely ludicrous and again in the last couple of years since he's been back, he has been exemplary on and off the field, he has let his bat do the talking, he was abused like I've never seen anything through England and he just kept smiling and letting his bat do the talking, give me a break, give me a break."

Australia captain Tim Paine, meanwhile, apologised on Tuesday for his behaviour during the third Test, including sledging Ravichandran Ashwin.

Langer backed Paine and said the 36-year-old would remain captain for the foreseeable future.

"You have no idea how much faith I've got in Tim Paine. He didn't have his best day, no doubt about that, but after three years, he has hardly put a hair out of place, he has been outstanding as the Australian captain, everything he does," he said.

"He had a frustrating day. We've got to cut him some slack surely. But having said that when you set a standard as high as he does and as we do, we understand we're going to get criticised when we fall below that, it's not what we're about.

"But Tim Paine, outstanding leader and will continue to be for some time to come yet. He has my 100 per cent support."

The series is locked at 1-1 ahead of the fourth Test starting in Brisbane on Friday.

Fair or foul? Gamesmanship or unsportsmanlike conduct? Steve Smith found himself in the spotlight after his actions on the final day of the third Test between Australia and India in Sydney.

Smith was at his best with the bat in the match, making scores of 131 and 81 as he returned to form in style after a recent lean spell.

However, it may well be his footwork during Monday's final day will overshadow what he achieved during the rest of the Test.

With India battling to save the game, stump camera footage seen on social media showed Smith standing at the crease during a break in proceedings, the Australian shaping up as if he was batting, including marking a guard.

His actions at the crease forced India's Rishabh Pant to retake his own guard before play resumed, with the moment becoming a hot topic on Twitter.

"Tried all tricks including Steve Smith trying to remove Pant's batting guard marks from the crease," former India batsman Virender Sehwag wrote to accompany the footage that was seen on the international feed of the broadcast.

Retweeting Sehwag's post, ex-England captain Michael Vaughan added: "This is very very poor from Steve Smith!!". Meanwhile, David Lloyd, who played and coached England before becoming a television commentator, wrote: "How childish".

Pant did not seem too perturbed by what happened, however, going on to make 97 as India impressively secured a draw.

Smith was sacked as Australia captain following the ball-tampering scandal during the tour of South Africa in 2018. Along with team-mate David Warner, he was banned for 12 months from international and domestic cricket for his involvement in the incident.

Cameron Bancroft, who was the player caught by television cameras appearing to use sandpaper to alter the condition of the ball during the third Test against the Proteas at Newlands, was handed a nine-month suspension.

Tim Paine, who took over as skipper of the Test side, was also trending on social media after a verbal exchange with India's Ravichandran Ashwin during the final session of play at the SCG.

Ashwin pulled away before a delivery as he and Paine shared words, their conversation picked up by the stump microphone.

England paceman Stuart Broad pointed out on Twitter that such situations are "part of the game" during a Test match, though did suggest Paine's use of an expletive could land him in trouble.

The wicketkeeper was indeed fined after the game, though lost 15 per cent of his match fee as punishment for dissent after questioning an umpiring decision during day three of the match.

Ashwin ended up unbeaten on 39 to help India survive and remain level at 1-1 in the series ahead of the final game in Brisbane.