From midnight on Friday May 1 until 7.00am on Sunday May 3, the price for booking over the phone will rise by £5.
Where is the fight?
At the MGM Grand Casino on the Las Vegas Strip.
Who's going to win?
Floyd Mayweather is favourite for Saturday's fight, with odds as short as 4/9 on with some bookmakers. 1/2 is the widely available price for Mayweather, whose odds have lengthed marginally
since the fight was announced.
Manny Pacquiao is generally priced at 2/1 to beat the American. A draw is priced at 18/1.
The fight is expected to go the distance, with odds of 3/10 available and 12/5 for the fight not running to the end of a 12th round.
Several less conventional bets are available, including 4/1 for Pacquiao to be knocked down, 3/1 that Mayweather will be, and as long as 20/1 that both fighters will be downed during the fight.
Mayweather is 200/1 to win within 60 seconds, Pacquiao slightly shorter at 150/1 and either doing so is 66/1.
You can also get odds of 4/1 that one of the fighters will receive a points deduction.
Undercard
Two fights will be televised, but there are four taking place before those at the MGM Grand.
The undercard is subject to change, but here is the latest running order:
Televised PPV undercard:
126 lbs: WBC Super Bantamweight World Champion Leo "El Terremoto" Santa Cruz (29-0-1, 17 KOs) vs. Jose Cayetano (17-3, 8 KOs)
126 lbs: WBO Featherweight Champion Vasyl Lomachenko (3-1, 1 KO) vs. Gamalier Rodriguez (25-2-3, 17 KOs)
Untelevised bouts:
154 lbs: Chris "Sweet" Pearson (11-0, 9 KOs) vs. Said El Harrak (12-2, 7 KOs)
168 lbs: Jesse Hart (16-0, 13 KOs) vs. Mike Jimenez (17-0, 11 KOs)
200 lbs: Andrew "The Beast" Tabiti (9-0, 9 KOs) vs. Anthony Caputo Smith (15-4, 10 KOs)
154 lbs: Brad Solomon (24-0, 9 KOs) vs. Adrian Rene Granados (13-3, 9 KOs)
Tale of the tape
Floyd Mayweather
Age: 38
Nickname: Money
Stance: Orthodox
Height: 5ft 8ins
Reach: 72ins
Record: 47-0, 26 knockouts
Rounds boxed: 363
World title fights: 24
Career earnings: $420 million
Manny Pacquiao
Age: 36
Nickname: Pacman
Stance: Southpaw
Height: 5ft 6ins
Reach: 67ins
Record: 57 wins, 5 defeats, 2 draws. 38 knockouts.
Rounds boxed: 407
World title fights: 19
Career earnings: $340 million
Mayweather v Pacquiao - the making of a superfight
Mayweather retires as No 1 pound for pound boxer after beating Oscar De La Hoya and Ricky Hatton. His record is 39-0.
Mayweather announces comeback. "I'm the King. I left on top. I came back on top," he says.
Pacquiao takes over as No 1 pound for pound fighter after beating De La Hoya and then knocking out Hatton, on May 2.
Mayweather makes his comeback and defeats Juan Manuel Marquez.
Mayweather's father sparks controversy with comments about Pacquiao. He says: "I don't think he can beat Lil' Floyd with steroids in him or not. He don't have that kind of talent. He don't have that kind of skill, whatever he has in him."
Defamation lawsuit filed by Pacquiao against Mayweather and his camp for Mayweather Snr's comments. Lawsuit was settled out of court in 2012.
Contract is sent to Mayweather on behalf of Pacquiao proposing a 50-50 financial split for a fight on March 13, 2010.
Fight falls apart over Pacquiao's objections to Mayweather's demands for urine testing and strict, random blood testing, right up to weigh-in day.
Snoop Dogg publicly begs Pacquiao to “get in the ************* ring.”
Mayweather rants at Pacquiao on an internet video post: “As soon as we come off vacation, we're going to cook that little yellow chump."
Nelson Mandela’s daughter tries to arrange bout for her father’s 93rd birthday. But fails.
Mayweather and Pacquiao speak on the phone. Mayweather offers Pacquiao a flat fee of $40 million for the fight. It is declined.
Pacquiao is knocked out by Juan Manuel Marquez which further scuppers hopes of a Mayweather-Pacquiao encounter.
Mayweather says fight will never happen because of his relationship with Bob Arum: "We all know the reason the Pacquiao fight won't happen is because I will never do business with Bob Arum again in life, and Pacquiao is Bob Arum's fighter.”
Pacquiao challenges Mayweather to a charity fight.
Pacquiao’s tax payments are investigated. Pacquiao calls for a Mayweather fight. Mayweather says: “He wants Floyd Mayweather to solve his problems."
Fight seemingly never going to happen after Mayweather insists on it happening on Showtime pay-per-view. Pacquiao is with HBO.
Breakthrough. A waiter in a West Hollywood restaurant introduces Les Moonves, president and chief executive of CBS Corp, to Freddie Roach, Pacquiao's trainer (pictured). Roach tells Moonves Pacquiao wants to fight and Moonves starts work to set it up.
After beating Chris Algieri in Macau, Pacquiao says the people "deserve" his fight with Mayweather.
Mayweather accuses Arum and Pacquiao of creating a delay for the fight and urges it to happen.
Arum (pictured) claims Pacquiao has agreed to terms for a fight with Mayweather on May 2 at the MGM Grand in Las Vegas. The deal calls for a 60-40 purse split in favour of the pound-for-pound king, with drug testing also agreed on. The hurdle now was getting television companies HBO and SHOWTIME to agree.
Mayweather and Pacquiao speak for the first time face to face at half-time of the Milwaukee Bucks-Miami Heat game in Miami. Mayweather gave Pacquiao his mobile number and they met in Pacquiao's hotel suite.
Telegraph Sport reveals that the richest match-up in boxing history between Mayweather and Pacquiao had finally been agreed after years of haggling.