Naomi Osaka put in a classy performance to beat Wang Xinyu 6-3 6-3 and book her place in the final of the Bad Homburg Open.

A day on from an impressive showing to defeat Ekaterina Alexandrova, the sixth seed was again in fine form on the grass to wrap up victory in 70 minutes.

The pair were evenly matched in the early exchanges, but Osaka earned two break-point opportunities in game six, taking the second when Wang went long with a forehand.

Osaka went on to see out the opener and immediately earned the chance to break at the start of the second set, but this time Wang staved off the danger.

The Japanese did break at the next time of asking, coming into the net to hammer a double-backhand winner, only to surprisingly give up her own serve in the next game.

However, Wang would cede yet another break when a forehand went long to leave Osaka 3-2 up, and Wang double faulted on the first of two match points to gift her opponent victory.

Osaka will now face the winner of the other semi between Elena-Gabriela Ruse and Karolina Muchova.

Osaka benefits from error-strewn Wang

There was not a great deal to split these two in terms of winners, and indeed Wang actually topped Osaka 13 to 11 in this category.

But, Wang also had 27 unforced errors to her name, the sort of tally that is just never going to wash against an opponent the calibre of four-time grand slam champion Osaka, who had only nine.

Osaka also dominated the serving stats, winning 79 per cent of first serves to Wang's 62 per cent, and landing eight aces to her opponent's one.

Speaking after her victory, Osaka was asked on court what her coach Tomasz Wiktorowski would think of her performance, to which she said: "I mean I think it's our first grass court tournament, I think he'd be pretty happy.

"I'm also pretty happy, but there's still one more match to play so we're just going to focus on that."