River Plate Porta scored a record-breaking haul of 19 goals in 15 league appearances during the
2007–08 Primera División's Torneo Apertura. He was joint leading-goal scorer of the tournament along with
Danubio's
Christian Stuani, establishing a new domestic record which prompted Uruguayan agent Paco Casal to buy the rights of Porta's contract for $1.1 million. In January 2008 Porta was signed to Italian club
A.C. Siena.
Siena It was reported that Porta had signed a five-year contract with Siena for approximately €3 million. On 16 March 2008, Porta debuted for Siena in a 4–0 loss to
Reggina Calcio when he was substituted onto the field for
Tomas Locatelli on 62 minutes. The match proved to be his only appearance in the
2007–08 Serie A season.
Belenenses In August 2008 Porta joined Clube de Futebol Os Belenenses for the
2008–09 Primeira Liga season. He debuted for the club on 21 September in a 2–0 loss to
Sporting CP. Two weeks later Porta scored his first goal for the club in a 1–1 draw against
Naval 1º de Maio on 5 October, Porta had been substituted onto the field on 87 minutes for
Gabriel Enrique Gómez Girón and scored the equaliser for Belenenses on 90 minutes. Porta appeared in 11 games for Belenenses during the 2008–09 season, having scored just one goal, his last appearance was on 24 May in a 3–1 loss to
Benfica. Porta made four appearances for Belenenses during the
2008–09 Taça de Portugal after losing to Naval 1º de Maio in the fourth round.
River Plate In July 2009 Porta was loaned to former club
River Plate de Montevideo where he replaced striker
Henry Damián Giménez who left for
Bologna. On 13 September Porta re-debuted for River Plate, scoring on 30 minutes in a 1–1 draw to
Rampla Juniors. In September Porta played in River Plate's
2009 Copa Sudamericana clash with Brazil's
Vitória as River Plate won 4–1 and drew 1–1 to advance to the next round. On 18 October he scored his second league goal after 15 minutes against
Atenas in a 1–0 win. On 21 October River Plate faced
San Lorenzo in the next round of the Copa Sudamericana as Porta played 87 minutes of the 1–0 loss. In the second-leg Porta would score for River Plate on 46 minutes which leveled the scores on aggregate. The match was decided by a
penalty shootout which River Plate won 7–6 despite Porta failing to convert his spot kick. Progressing to the semi-final stage of the Copa Sudamericana, Porta put River Plate 1–0 in front after nine minutes against
LDU Quito as his side claimed a 2–1 victory at the Estadio Centenario on 12 November. In the second-leg on 19 November River Plate would lose 7–0 to Quito in a game which Porta did not take part in. On 31 January Ported scored River Plate's second goal in a 3–3 draw to
Central Español. On 25 February Porta received his first red card in a 3–0 win to Danubio when he was substituted on to the field on 59 minutes and was red carded in the same minute. River Plate finished the
2009–10 season in fifth spot with 23 points as Porta had scored 3 goals in 20 league matches.
Nacional 2010–2011 season In July 2010 Porta was loaned to Club Nacional de Football for the
2010–11 season where he made his debut on 30 August in a 3–0 loss against
Fénix at Nacional's
Estadio Gran Parque Central. On 12 February he scored his first goal for Nacional in a 2–1 loss to
Fénix at the
Estadio Centenario. On 16 February Porta debuted for Nacional at the
2011 Copa Libertadores in a 2–0 loss to Mexico's
Club América when he was substituted onto the field on 46 minutes for
Nicolás Vigneri. On 13 March in a 2–0 win against
Liverpool Porta was substituted onto the field on 65 minutes for
Jonathan Sebastián Charquero and scored Nacional's second goal one minute later. Three days later Porta was substituted onto the field for Maximiliano Calzada on 64 minutes in Nacional's 1–0 Copa Libertadores win against
Argentinos Juniors. On 21 March Porta scored a double for Nacional as they beat
Cerro 3–0. On 29 May Porta scored his last goal for Nacional in the 2010–11 season after five minutes in a 3–0 win against
Defensor. Nacional finished in first place of the 2010–11 Torneo Clausura with 34 points, claiming a spot at the
2012 Copa Libertadores given that they had finish in third position in their respective 2011 Copa Libertadores group, behind
Fluminense and
Club América. Having scored 5 goals in 19 league appearances it was reported that at one stage during 2010 Porta was a recruiting target for
Sydney FC.
2011–2012 season Loan to Al Wasl After five games of the
Torneo Apertura, in October 2011, Porta announced that he was joining
Diego Maradona in his new club
Al Wasl FC in
Dubai, the United Arab Emirates. After three months in the Emirates, he returned to Nacional as his contract with Al Wasl was terminated. Even though he missed many games while in Al Wasl, Porta ended the
Campeonato Uruguayo as the highest scorer with 17 goals in 16 games, including two consecutive
hattricks, against Cerrito and Bella Vista.
Dubai Club On 11 July 2012, it was reported that Porta had rejected an offer in England in favour of a two-year multimillion-dollar contract with UAE Pro-League side Dubai Club.
Independiente del Valle On 1 August 2014, Porta signed on to play with
Ecuadorian Serie A club
Independiente del Valle for the remainder of the season.
Rentistas Upon his departure from Independiente del Valle, Porta signed with Uruguayan football club ==International career==