AMIR KHAN admits his boxing career will be down the pan if he is shocked by Chris Algieri.
The Bolton ace has shown fantastic desire rescuing his career after losses against Breidis Prescott, Danny Garcia and Lamont Peterson.
A fourth defeat against the American in their Brooklyn 12 rounder on Friday night is unthinkable for the former world light-welterweight champion.
Khan, 28, wants to seal his welterweight legacy by beating the likes of Floyd Mayweather, Manny Pacquiao, Keith Thurman and Kell Brook.
But Khan realises the consequences if he meets with defeat at the Barclays Center admitting: "I will be limited if I lose so I cannot afford to make any mistakes.
"There is a lot of pressure on this fight in the sense that if you make a mistake you are done.
"It is hard to then look at those big fights. Styles might clash, some fighters can get on with it."
It all adds pressure on Khan to deliver with a lot of the pre-fight hype over-shadowed by talk of a possible fight against the world's number one boxer Floyd Mayweather Jr.
The topic became so hot, that Khan's trainer Virgil Hunter banned any questions about Mayweather from the media at a lunch on Tuesday.
Hunter snapped: "Everything is Floyd, Floyd, Floyd. He has to fight Algieri. If he loses then you will rake him over the coals. He has to focus on Algieri."
Algieri, 31, has a heart bigger than New York as he proved his last years points win over Ruslan Provodnikov when he was down twice in round one.
When he suffered his only loss in 21 fights getting outpointed by Manny Pacquiao last November he survived six knockdowns.
Khan says: "Chris is a very good boxer, obviously with the height and the reach and the good movement he has he can frustrate fighters and by doing that he can catch them.
"Look at the Provodnikov fight, that's what he did. A lot of people thought it would be stopped but he kept boxing, making him fall short and miss and it's about not making the same mistakes Provodnikov.
"Manny did right what he did - he had the right game plan to win the fight. It will be a lot easier for him being a southpaw but I can't look at that fight and say 'I am going to do exactly what Manny did.
"He is a different fighter to me - different height and a southpaw so that changes it all around.
"I am just sticking to the game plan me and Virgil have been working on and if he wants to fight we will be there. If he wants to run we will be there. We will have answers for whatever he has."
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