She started playing tennis at the age of five. Since 2013, she has played on the professional tour, mainly at ITF Circuit tournaments. In 2017, she won her first ITF doubles tournament in Caslano, Switzerland, partnering her compatriot Lisa Sabino.
2019-2020: WTA Tour debut[]
In November 2019, Bandecchi made her WTA debut at the Taipei tournament, where she participated in both singles and doubles. In 2020, Bandecchi won the ITF tournament in Lousada, Portugal, in singles, beating the Dutch player Arianne Hartono in the final. Together with Lara Salden from Belgium, she also won the doubles title in Lousada.[2][3]
Grand Slam singles performance timeline[]
Key
W
F
SF
QF
#R
RR
Q#
P#
DNQ
A
Z#
PO
G
F-S
SF-B
NMS
P
NH
(W) Won; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (F-S) silver or (SF-B) bronze Olympic/Paralympic medal; a (NMS) downgraded Masters Series/1000 tournament; (P) postponed; (NH) not held. SR=strike rate (events won/competed)
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.
Switzerland
Ulrikke Eikeri 
Valentini Grammatikopoulou
Miriam Kolodziejová
Julia Glushko
Elisabetta Cocciaretto
Arianne Hartono
Lara Salden
Valeria Savinykh
Karman Kaur Thandi
Katarzyna Piter
Eden Silva
Arina Rodionova
)
1)
12)