 During the 2013–14 season, Vähätalo was an assistant captain for HC TPS's Jr. team, where he recorded 18 goals and 21 assists in 33 games, as well as three goals in 18 games for HC TPS.After spending the first four seasons of his professional career with TPS, Vähätalo left the club in signing a contract with fellow Liiga club, Mikkelin Jukurit, on 18 April 2017.Vähätalo represented Finland at the 2015 World Junior Ice Hockey Championships, where he did not record any points in five games.