Back in 2017, Borna Coric won the first ATP title in Marrakech but made no progress on the ATP ranking list at the end of the year, lingering just inside the top-50 from where he started the journey in January. In the previous couple of years, Borna had worked with various coaches, including Miles Maclagan, Ivica Ancic, Zeljko Krajan and Thomas Johannson, failing to take his game to a higher level and deciding to change the approach ahead of 2018 season.
Setting no goals in terms of the ranking, Borna started to work with the Piatti coaching team, especially Kristijan Schneider who had traveled with him during tournaments. From 24 ATP wins in 2017, Borna improved his tally to 40 in 2018, updating various elements of his game and lifting the ATP 500 trophy in Halle after beating Roger Federer in the final.
Borna was the semi-finalist at Indian Wells, losing to Federer in three tight sets before the quarter-final run in Miami, earning valuable points and cracking the top-30 for constant progress through the list. The results were not there during the clay season, though, forcing Borna to step down to the lower positions before that incredible result in Halle that pushed him into the top-20 for the first time in a career.
After early exits in the next couple of events, Borna reached the fourth round at the US Open and won two Davis Cup rubbers against the USA, helping his country to reach the final where he grabbed one win en route to the title against France.
Before that, the young Croat went all the way to reach the final at the Masters 1000 event in Shanghai, toppling Juan Martin del Potro and Roger Federer before losing to Novak Djokovic, securing the spot in the top-15 and setting eyes on significant achievements in 2019 as well.
Coric advanced into the fourth round at the Australian Open and the semi-final in Dubai in the first events of the new season, followed by the quarter-final run in Miami, Monte Carlo and Budapest to stay in the top-15 ahead of the biggest events on clay.
Borna scored four wins in Rome and Paris, advancing into the semi-final at s-Hertogenbosch but failing to repeat what he did in Halle a year earlier after the quarter-final loss. The Croat was forced to skip Wimbledon due to back problems and couldn't find the form in Umag, Montreal and Cincinnati as well before another withdrawal at the US Open ahead of the second-round clash with Grigor Dimitrov, still lingering inside the top-15.
After that, Borna decided to part ways with Piatti coaching staff after almost two years, seeking new solutions and hoping to play on a higher level in 2020. After the semi-final in St. Petersburg, Coric lost six of the last seven encounters, suffering an early loss in Paris to finish the regular season with a 27-21 score, hoping for more during the Davis Cup Finals and also in 2020 when he should compete under the new coaching team.
"2019 was a road full of ups and downs. Unfortunately, I couldn't achieve the results I wanted and had been working so hard for. But, nothing kept me going better than all your love, support and warm wishes. I'm looking forward to the new season and will be back stronger."