Dallo attended the
National Institute of Sport and Physical Education (INSEP).
Poitiers (2012–2013) Dallo signed a two-year deal with
Poitiers Basket 86 of the
LNB Pro A. He made his professional debut in the
2012–13 season.
KK Partizan (2013–2015) In August 2013, Dallo signed a four-year contract with the Serbian club
Partizan Belgrade. In his first season with Partizan, he won the
Basketball League of Serbia defeating
Crvena zvezda with 3–1 in the final series. After the end of the 2014–15 season, he parted ways with Partizan.
2015–2017 In July 2015, Dallo returned to France, and signed a two-year deal with
Olympique Antibes. On 1 November 2016, Dallo was acquired by the
Long Island Nets of the
NBA Development League.
Panionios (2017–2018) On 16 October 2017, Dallo joined
Panionios in the
Greek Basket League. In 22 games he finished the 2017–2018 season averaging 7.5 points, 7.3 rebounds, 3,2 assists and 12,3 index in 27 minutes. He was the third best rebounder of the league and the top rebounder of his team.
Aris (2018–2019) On 28 June 2018, Dallo joined
Aris in the
Greek Basket League.
SIG Strasbourg (2019–2020) On 5 August 2019, Dallo signed with
SIG Strasbourg of the
Pro A.
Le Portel (2020–2021) On 28 May 2020, Dallo signed with
ESSM Le Portel of the
LNB Pro A.
Cholet Basket (2021–2023) On 31 August 2021, Dallo signed with
Cholet Basket of the
LNB Pro A.
ASVEL Basket (2023–2024) On 3 July 2023, Dallo signed with
ASVEL Basket of the
LNB Pro A and the
EuroLeague. On 22 February 2024 he parted ways with the club.
Real Betis Baloncesto (2025–present) On March 25, 2025, he signed with
Real Betis Baloncesto of the
LEB Oro. ==National team career==