Rafael Nadal has vowed to put everything into regaining his usual level after a 2022 season that promised so much fizzed out in Turin. Nadal lost to Felix Auger-Aliassime in his second ATP Finals round robin match to extend his losing streak to four matches. It ended his chances of being the year-end world number one and leaves him still searching for his first ATP Finals title, but he says he has no concerns about any kind of decline setting in. “I don’t think I forgot how to play tennis, how to be strong enough mentally,” Nadal said. “I just need to recover all these positive feelings and all …