Seems like the Pakistan Cricket Board (PCB) is convinced of Mohammad Amir's potential to get back to his best after his haul of five wickets in two ODIs against New Zealand. The pacer, who is just 23-years-old, is making a comeback from a five-year ban for spot-fixing during a series in England in 2010. But it hasn't been easy for Amir. The left-armer hardly enjoys the trust of fellow cricketers despite serving his sentence and admitting to his mistakes. He will probably never get rid of the 'spot-fixer' tag for the rest of his career. However, sport is full of cases where athletes have come back from bans and made it big. Whether they should have been allowed to do so or not is a separate argument, but the best redemption for them is performance. Here are five 'former cheats' who made an impact on their sport after lengthy bans:

Marlon Samuels

The West Indies cricketer maintains his innocence but was slapped with a two-year ban in 2008 for receiving benefits that could bring him or the game of cricket into disrepute. Indian police released transcripts of conversations he had with a known bookie. Samuels served his two years out in the cold and has made a successful comeback -- and is one of the mainstays of the Windies squad.

Since 2010, he has scored 2214 runs (including five tons) and taken 34 wickets in Tests; 2293 runs (including seven tons) and 28 wickets in ODIs and 821 runs and 17 wickets in T20Is.

Mike Tyson

The self-attested 'most brutal and vicious' boxer ever made multiple comebacks for criminal controversies but his most talked sporting ban came after he bit off a part of Evan Hollyfield's ear in 1997. He came back a year later and was equally popular (either as villain or hero) and his bouts never went unnoticed. Tyson's comeback this time was more about the drama surrounding it than his performances.

He beat Francois Botha, Julius Francis, Lou Savarese and Andrew Golota but then lost a heavyweight championship bout against Lennox Lewis (after telling him that he wanted to eat his heart and his children). The fight raised $106.9 million -- then the highest grossing event in pay-per-view history.