Two years later, he was officially called up to the first team, but did not feature as a regular with the side until the 2006 Torneo Apertura, during which he scored 2 goals in 15 appearances, as Arsenal finished the season in 5th place.

[6][7] San Lorenzo de Almagro signed Gómez for a 2 million dollar transfer fee, half of his estimated market value, in time for the 2009 Clausura tournament.

His breakthrough campaign came during the 2012–13 season, when his playmaking and offensive prowess became the main catalyst of the team, propelling his side to club record highs for home and overall victories, and, for their 5th successive year, points.

[10] Catania, for reasons that were never clarified, sold Gómez during the summer and replaced him with the injury-prone and inconsistent Sebastián Leto, whom they acquired on a free transfer from Panathinaikos.

[12] Despite having four of their top six offensive players return, and later five of their six when Francesco Lodi was reacquired on loan from Genoa in January, Catania's performances declined heavily, which saw them fall to 18th position in the league, and as a result, they were ultimately relegated.

[16] By the December winter break, failing to settle into his new surroundings due to a combination of the league's lack of visibility and quality, which he believed made playing in it a waste of time, as well as adverse environmental and linguistic issues in Ukraine itself, which he saw as insurmountable, Gómez wanted out of his contract.

[20] Following Giacomo Bonaventura's departure to Milan on 1 September 2014, Atalanta acquired Gómez on the same day, signing him on a three-year deal in the last hours of the summer transfer window in Italy.

[21] Gómez had a decent first season, contributing 3 goals and 2 assists in 24 appearances to a poor, offensively-challenged Nerazzurri squad that struggled and narrowly avoided relegation, finishing fourth from the bottom, 3 points ahead of Serie B-bound Cagliari.

[23] During the 2016–17 season, Gómez managed to score an unprecedented total of 16 goals as his team finished in the fourth place contrary to the lower pre-season expectations.

As captain, Gómez helped lead Atalanta to a historic third-place finish in the 2018–19 Serie A season, earning a spot in the 2019–20 UEFA Champions League, as well as reaching the 2019 Coppa Italia Final.

[27] During half time of Atalanta's Champions League group stage match against FC Midtjylland on 1 December 2020, there was a heated exchange between Gómez and manager Gian Piero Gasperini over his positioning on the pitch.

[3] FIFA has since ruled him ineligible to switch his football nationality, however, because he did not have a dual passport when he first represented Argentina at that level, and does not have Italian lineage, which would have allowed him to override this requirement.

[39] On 19 May 2017, Gómez received his first senior call-up by newly appointed coach Jorge Sampaoli for Argentina's friendlies against Brazil and Singapore in June.

[45] Gómez was included in Argentina's final 26-man squad for the 2022 FIFA World Cup,[46] starting his nations's opening game against Saudi Arabia and in the Round of 16 against Australia.

[48] A talented, diminutive player, with quick feet, explosive acceleration, and a low centre of gravity, Gómez is a creative, technically gifted, and dynamic footballer, who is renowned for his pace, dribbling skills, and high work-rate.

[3][49][50][51][52][53][54][55][56][excessive citations] Possessing good movement and a powerful and accurate long range shot with either foot, he is known for his eye for goal from midfield,[49][50][51][53][57] although he is also capable of creating goalscoring opportunities for teammates.

[49][50][58][59][60][61][62][63][excessive citations] A versatile attacker,[52][64][65] he is capable of playing in several offensive positions,[52][66][67] and has even been deployed as a main striker on occasion,[68] or as a false 9,[69] although he usually plays as a second striker,[50][58][70][71] in a central playmaking role as an attacking midfielder,[72][73][74][75] or as a winger, usually on the left flank, a position which enables him to take on defenders in one on one situations, cut into the centre onto his stronger right foot, and attempt a curling shot at goal,[3][49][50][51][58][72][76][excessive citations] although he was often used on the right wing earlier in his career.