Watch Celtics rookie Daniel Theis posterize Boris Diaw in FIBA EuroBasket play

Daniel Theis in action against France's Joffrey Lauvergne during a FIBA EuroBasket 2017 Round of 16 match. EPA/Sedat Suna

Gordon Hayward and Kyrie Irving aren’t the only newcomers who can generate excitement among Celtics fans.

Daniel Theis, the team’s rookie center, threw down a monster dunk over France’s Boris Diaw on Saturday. The 25-year-old is currently representing his home country, Germany, in FIBA EuroBasket play.

Boston announced in July that they had signed Theis to a two-year contract, making him the first German-born player to join the team.