Deciding to return to ice dancing, he teamed up with Paola Amati and won the 2009 junior national bronze medal.

Fabbri and France's Charlène Guignard began competing together for Italy in the 2010–11 season, coached by Barbara Fusar-Poli.

[4] They finished fourth in their international debut, at the 2010 NRW Trophy, before winning the bronze medal at the 2010 Golden Spin of Zagreb.

[5] In the 2011–12 season, Guignard/Fabbri repeated as the Italian national silver medalists and placed eleventh at their first European Championships in Sheffield, England.

[5] Guignard/Fabbri began the 2013–14 season with a silver medal at the 2013 Ondrej Nepela Trophy and then placed seventh at their sole Grand Prix event, the 2013 Skate Canada International.

They had the same final result in March at the 2014 World Championships in Saitama, Japan, after placing seventeenth in the short and twelfth in the free dance.

[5] Making their Challenger Series (CS) debut, Guignard/Fabbri won the silver medal at the 2014 Ondrej Nepela Trophy.

Having received two Grand Prix invitations, they placed sixth at the 2014 Skate America and fifth at the 2014 Trophée Éric Bompard.

Turning to the Challenger Series, they won gold medals at the 2015 Warsaw Cup and 2015 Golden Spin of Zagreb.

They placed fourth at both of their events on the 2016–17 Grand Prix and won their seventh silver medal at the Italian Championships.

[5] The duo began the season with their second straight victory at Lombardia, as well as a silver medal at the 2017 CS Golden Spin of Zagreb.

Their result, combined with the fourth-place finish of Anna Cappellini and Luca Lanotte, earned Italy three spots at the following year's world championships.

Shortly afterwards, Fabbri injured the tendons in his right hand, and for some time, the team contemplated withdrawing from the Grand Prix as a result.

"[14] Following the French Grand Prix, Guignard/Fabbri opted to discard their original Paramour-themed rhythm dance in favour of music from Grease.

[16] They placed fourth in the free dance after Guignard fell on a lift exit, winning their second bronze medal of the Grand Prix season.

[18] They were scheduled to skate last in the free dance, which became a protracted wait following technical issues in assessing the score for the penultimate team Papadakis/Cizeron.

[31] The results qualified them for the Grand Prix Final, to be held in Osaka, but it was subsequently cancelled due to restrictions prompted by the Omicron variant.

[33] At the 2022 European Championships in Tallinn, Guignard/Fabbri won their second bronze medal, despite their longtime coach Barbara Fusar-Poli being unable to participate due to testing positive for COVID-19.

Thinking on the future, Fabbri mused, "having an Olympic Games in Milan, Italy, which is my home town, and where Charlène has been living for more than ten years, is inviting.

[42] Once again beginning the season at the Lombardia Trophy, they won another gold medal, setting a new personal best in the rhythm dance in the process.

Guignard and Fabbri mistakenly drove to Birmingham rather than the event's actual location in Sheffield initially, but nevertheless arrived in time and won the rhythm dance over home favourites Fear/Gibson.

[45] Guignard and Fabbri entered the Grand Prix Final as the second-ranked team behind Canadian champions Gilles/Poirier, with the event occurring on home ice in Turin.

Despite making revisions to their music and choreography before the event in the hopes of improving their scores, they recorded lower marks in the segment than previously.

"[48][49] Entering the 2023 European Championships as the title favourites, Guignard/Fabbri won the rhythm dance over Britons Fear/Gibson by a margin of 1.11 points.

Guignard expressed disappointment that changes made to their rotational lift had not resulted in better scores, as they felt it was more musical.

"[52][53] At the 2023 World Championships in Saitama, Guignard/Fabbri were considered favourites for the podium along with Chock/Bates and Gilles/Poirier, the latter having missed much of the season after Gilles needed an appendectomy.

Fabbri called the result "fabulous," noting that they had had time in advance of the championships to discuss improvements to the program.

[61] Guignard/Fabbri entered the 2023 NHK Trophy as the favourites, but were unexpectedly upset in the free dance by European silver medalists Fear/Gibson of Great Britain.

[62] Guignard/Fabbri rebounded from the underwhelming NHK Trophy result with their performance at the Grand Prix Final, where they finished second in both segments of the competition and took the silver medal.

"[67] Three weeks later, Guignard and Fabbri won the gold medal at the 2024 Cup of China, solidifying their spot at the 2024–25 Grand Prix Final.