[3] Becchio began his career in Buenos Aires at Boca Juniors but moved to Europe aged 20 after failing to make the grade at Los Xeneizes.

Through his ancestry, Becchio was able to claim an Italian passport and subsequent citizenship of the European Union, allowing him to sign for Spanish club Mallorca B in 2003.

The Argentine went on to feature in over 200 games and scored over 80 goals at Leeds, achieving promotion from League One in 2010 and playing in the same team that knocked reigning English Champions Manchester United out of the FA Cup in January of the same year.

Becchio signed for Premier League club Norwich City as part of a swap deal for Welsh striker Steve Morison on 31 January 2013.

As a child, he had a keen interest in tennis but football was his main passion; idolising legendary striker Gabriel Batistuta and following Buenos Aires-based Boca Juniors.

In 2000 aged 16, he made the 425 mile-move south to join the youth ranks at Los Xeneizes where he was joined in his age group by the younger Carlos Tevez who went go on to achieve great success in European club football by winning Premier League titles with Manchester United and Manchester City.

With opportunities at Boca limited, he agreed to make the move to the Balearic Islands where he was joined by his parents and younger brother Mathias after selling their family restaurant business in Argentina to support their son in Europe.

[7] In July 2008, Becchio joined League One side Leeds United on trial aiming to impress manager Gary McAllister in pre-season friendlies against Shelbourne and Barnet.

[13] The following week, he came off the bench to head home his third Leeds goal in the 2–1 win over local rivals Bradford City in the Football League Trophy.

[citation needed] In a sequence of appearances which saw him start 24 consecutive matches – including the entire busy Christmas period and while deputising for the injured Jermaine Beckford – he scored nine goals.

[citation needed] With the loan signing of Lee Trundle from Bristol City, and the January transfer window signing of Mike Grella, manager Simon Grayson publicly stated that Becchio would be given a short resting period so that he would be ready for the vital last few months of the season,[15] although that never materialised as Becchio was insistent on retaining his place in the team.

[citation needed] Grayson frequently referred to Becchio as Lazarus due to various points in the season where he would be injured but would make a remarkable recovery to be fit and ready for the next match.

[16] His 19th of the season came against Millwall in the League One play-off semi-final, in which he rounded off a fine team move started by Ben Parker, with Beckford and Andy Robinson also playing vital roles.

[20] Becchio picked up a serious ankle injury in the game against Charlton Athletic on 9 September, when he stepped on the ball whilst controlling it from a high pass, and had to be substituted.

[22] In November Becchio was still sidelined;[23] in his absence Leeds signed Welsh International striker Sam Vokes on loan from Wolverhampton Wanderers until 1 January 2010.

[24] On 25 November 2009, Becchio returned from injury and played in Leeds' reserve team game against Lincoln City, to help boost his match fitness.

[26] Becchio played against Premier League team Manchester United when Leeds won 1–0 away at Old Trafford on 3 January 2010 in the FA Cup third round, but he picked up an injury and was substituted in stoppage time.

[27] Becchio struggled for goals for Leeds since returning from injury, with him being asked to play in more of a deeper strikers role to hold the ball up for the midfield.

[34] Becchio scored his fifth goal of the season with a fine left footed volley and received the man of the match award against Middlesbrough.

In the post match on-the-pitch interview with Sky Sports he also famously swore live on air stating that it was a "fucking unbelievable win!

[37] In the game against Hull City he suffered a black eye after being elbowed by Ian Ashbee[38] Becchio scored his seventh, eighth and ninth goals of the season with a 17-minute hat-trick against Bristol City after coming on as a second-half substitute[39] On 3 December 2010, Becchio won The Championship PFA Player of the month Award for November beating off competition from Adel Taarabt, Lewis McGugan, Scott Sinclair and Jay Bothroyd for the award.

[56] Becchio came on as a substitute against Bristol City on 1h[clarification needed] September providing the assist for Ross McCormack's winning goal.

On 22 October 2011, Becchio thought he had scored a dramatic late winner against Peterborough United in a 3–2 win, however teammate Darren O'Dea was credited with the goal.

[59] After getting a rare start Becchio scored his second goal of the season on 29 November in Leeds' emphatic 4–0 win against Nottingham Forest.

On 4 May, Neil Warnock stated his belief that Becchio would come back a stronger player for the 2012–13 season and recapture his prior form with a full pre-season behind him.

[77] After being released by Norwich City at the end of the 2014–15 season when his contract expired, Becchio returned to his homeland Argentina to play for Club Atlético Belgrano in the Argentine Primera División.

[79] On 21 January 2016, it was confirmed that Becchio had re-signed for English Championship side Rotherham United on a contract until the end of the season,[80] to work under former Leeds manager Neil Redfearn.

On 12 January 2017, Becchio revealed on his official Twitter page that he had signed for Spanish side CD Atlético Baleares managed by Christian Ziege.