Alexander Zverev is targeting an elusive grand slam title after the Olympic Games gold medallist capped a fine year with ATP Finals glory.

Zverev outmatched defending champion and second seed Daniil Medvedev 6-4 6-4 to claim his second ATP Finals crown in Turin on Sunday.

Champion at the Tokyo Games, Zverev became the first player to beat the world number one and two in the semis and final since Andre Agassi in 1990, having upstaged Novak Djokovic in the final four.

After celebrating his 59 tour-level victories – the best on tour – Zverev turned his attention to grand slams.

Despite his success at the Olympics and Masters 1000 level, Zverev is yet to break through at slams having lost last year's US Open final, while reaching three semi-finals previously.

Asked if he was closer than ever to winning a slam, Zverev replied: "I think so, yeah. I mean, why not, right?

"I've kind of succeeded at every single level. There's one thing missing. I hope I can do that next year."

Zverev, who claimed a tour-leading sixth title this season, added: "They [things] couldn't be much better, to be honest.

"I'm obviously happy with how the season went, I'm happy with the finish of the season because obviously it was a great year.

"To capture the title here has been incredible."

US Open winner Medvedev also backed Zverev to conquer a grand slam tournament, saying: "Sascha is a great player who is capable of beating anybody, so he definitely can win a Grand Slam, because It’s just obvious.

"But he's not the only one and that's where it gets tough. He was in the semi-finals of the US Open and lost in five sets [to Djokovic]. Who knows maybe if he was in the final he might have beaten me.

"It's just a matter of every tournament is a different scenario and surface, you have to win seven matches to be a grand slam champion. Is he capable? Yes. Is he going to do it? We never know."