Alexander Zverev has warned his rivals he is feeling more motivated and committed this year than ever before following his Grand Slam heartbreak last season.
Zverev lost a deciding-set tiebreaker to Dominic Thiem in the US Open final in September, meaning it was the Austrian and not him who made a major career breakthrough.
That defeat has haunted Zverev since, but as he returned to America for a tournament for first time since that loss, he says he has turned than pain in to a positive.
"That loss made me in a way even hungrier," he told reporters ahead of the Miami Open.
"I was two points away from winning my first Grand Slam title at the US Open, but I didn't at the end of the day. You have to look at those things as well.
"In a way, this year I feel like I'm more motivated than ever to do well. I'm trying to improve every single aspect of the game to give myself the best chance that I can have.
"I feel like I'm building towards that. I would like to win them all."
Before Zverev can get another shot at a Grand Slam, he has the a busy schedule to negotiate, and he says he can't afford to look too far ahead right now.
"I'm looking forward to the next weeks. I'm not trying to think of the Grand Slams right now because the Grand Slams are still a little bit far away.
"We have four Masters 1000s events before that. I have other big events before that, as well. I'm trying to focus on that, trying to compete in those events, trying to do the (best) job that I can."
Zverev arrives in Miami in good form having won a 14th career title in Acapulco last week.
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