Germany trounced Finland 4-0 in their final pre-World Cup friendly on home soil on Sunday, with Deniz Undav scoring twice before suffering an injury scare. 

Undav had a brace and an assist under his belt when he went down holding his right thigh and was replaced by Maximilian Beier on the hour mark, though he later reemerged to shake hands with Germany's substitutes and appeared to be walking comfortably.

Julian Nagelsmann selected a strong starting lineup in Mainz, albeit with Oliver Baumann between the sticks as Germany wait for Manuel Neuer to link up with their squad.

And he was rewarded with a dominant first-half showing, with Undav going close on two occasions before his 34th-minute opener. 

The Stuttgart man failed to beat Lukas Hradecky from close range in the eighth minute and when one-v-one in the 27th minute, but it was third time lucky when he nodded Joshua Kimmich's cross home at the far post.

Undav then turned provider three minutes into the second half, though Finland were masters of their own downfall when Adam Markhiev's loose pass, intended for Ville Koski, was intercepted by the Germany forward, who teed up Florian Wirtz for a simple finish.

Teenager Lennart Karl struck the post soon afterwards, but Bayern Munich's breakout star at least recorded an assist when he fed Undav, who steered past Hradecky in the 57th minute.

Undav appeared to injure himself in the act of scoring that goal and was subsequently replaced, though Germany quickly added a fourth goal when Jamal Musiala fired into the top-left corner on his left foot.

Musiala also hit the side netting late on, while Beier had an effort cleared off the line and Nadiem Amiri rifled wide from the edge of the area, as Finland avoided further damage.

Germany will now travel to the United States, who they face in their final pre-tournament friendly in Chicago on Saturday.

Data Debrief: Undav makes his case

With Nagelsmann naming a strong lineup, chances for players to play their way into his World Cup plans were few and far between here.

But with the Nationalelf lacking a true number nine, they will hope Undav's injury is not serious after he made a strong case to start their World Cup opener versus Curacao on June 14. 

Undav hit the target with all four of his shots and outperformed his expected goals (xG) figure of 1.37, while also creating three chances for team-mates – only Kimmich and Karl (four each) laid on more.

The hosts finished with 22 shots and 3.8 xG, compared to Finland's seven shots (none of which hit the target) and 0.4 xG.