May 9, 1990|
|Height||5 ft 10 in (178 cm)|
|Weight||183 lb (83 kg; 13 st 1 lb)|
Alatalo came through the youth ranks of Finnish team JYP. He moved to HPK youth program in 2007 and made his debut in the country's top-tier SM-liiga during the 2008-09 season. He helped HPK to a trip to the finals in 2010, where they were defeated by HC TPS.
Aatalo made his debut in the Swiss National League A (NLA) in the 2012–13 season with HC Davos after a mid-season transfer from HPK. On December 20, 2012, it was announced that Alatalo signed a two-year contract with NLA rivals EV Zug to begin the following season. In October 2014, he was handed a contract extension through 2017.
Alatalo won his first NL championship with EV Zug in May 2021.
On May 10, 2021, Alatalo agreed to a four-year deal with HC Lugano through the 2024–25 season.
Alatalo's father Matti Alatalo is an ice hockey coach.
In 2020, Alatalo received Swiss citizenship.
Regular season and playoffs
- "Santeri Alatalo player profile". jatkoaika.com (in Finnish). 2014-05-16. Retrieved 2014-05-17.
- "Alatalo signs from Finland". hockeyfans.ch (in German). 2013-10-22. Retrieved 2013-10-22.
- "Zug agree to terms with Santeri Alatalo". EV Zug (in German). 2012-12-20. Retrieved 2012-12-20.
- "Santeri Alatalo bleibt beim EVZ | EVZ". www.evz.ch. Retrieved 2016-05-27.
- Gürler, Eren (20 December 2020). "HäSa: Huippukautta Sveitsin kiekkoliigassa pelaavalta suomalaispuolustajalta yllätysratkaisu: valitsi Sveitsin maajoukkueen". Iltalehti (in Finnish). Retrieved 21 December 2020.