The banners and signs — one of which declared, “Sinner for president.” Late in the second set of his victory over Taylor Fritz at the ATP Finals on Tuesday, Jannik Sinner used all the adulation in his home country to his advantage.

Daniil Medvedev was able to “block the noise” following a temper tantrum in his previous match and moved back into contention at the ATP Finals with a 6-2, 6-4 victory over Alex de Minaur on Tuesday.

A rejuvenated Daniil Medvedev defeated Alex de Minaur 6-2 6-4 in his second match at the ATP Tour Finals. Fourth seed Medvedev was irate during his opening defeat by American Taylor Fritz on Sunday but looked far more settled during Tuesday's victory.

Antonio Calanni/AP Russia's Daniil Medvedev Australia's Alex de Minaur returns the ball to Russia's Daniil Medvedev Australia's Alex de Minaur during their singles tennis match of the ATP World Tour Finals at the Inalpi Arena,

Jannik Sinner hit the accelerator at the end of each set as he cruised past Taylor Fritz 6-4, 6-4 on Tuesday to close in on a semi-final spot at the ATP Finals in Turin.

Jannik Sinner beats Taylor Fritz 6-4 6-4 while Daniil Medvedev defeats Alex de Minaur 6-2 6-4 at the ATP Tour Finals.