Riccardo Piatti became a coach in 1982. Between 1984 and 1988 he was in charge of the youth technical sector of the Italian Tennis Federation and was captain of the Borotra Cup team. From 1988 he decided to work as a private coach and follow some of the best young Italians of the moment such as Renzo Furlan, Cristiano Caratti, Federico Mordegan and Cristian Brandi, Omar Camporese.
In 1996 he was a collaborator for Olympic preparation and for the Davis Cup, contributing to the quarterfinals reached by Renzo Furlan at the Atlanta Olympics and to the semifinal in Davis which Italy lost against France. The experience was repeated in 2000 and 2004. From 1997, until his retirement in 2012, he followed the Croatian Ivan Ljubicic, taking him up to third position in the rankings and winning ten ATP tournaments including the Indian Wells Masters, the Olympic bronze in doubles at the Athens Olympic Games and the Davis Cup in 2004 to which are added two participations in the Master Cup.
From 2011 to 2013 she worked with Richard Gasquet, from whom he separated for personal reasons. From 2013 to 2017 he followed Milos Raonic, a period in which he reached a final at the Wimbledon Tournament and third position in the ranking.
Since 2008 he has supported his activities with workshops and technical consultancy for other clubs, coaches and players. In 2017 he founded his own academy called Piatti Tennis Center in Bordighera, officially inaugurating it in April 2018, whose staff also included Massimo Sartori, coach of Andreas Seppi, Marco Cecchinato and Karin Knapp, and Cristian Brandi. Seppi himself trained in the structure, Borna Coric, Jannik Sinner, who he followed and trained from 2014 to 2022 until he reached the Top 10, and for short periods also Novak Dokovic, whom Piatti had followed between 2004 and 2005 , Stan Wawrinka and Garbine Muguruza. Thanks to the successes achieved with Sinner, he was among the candidates for the ATP award for the best coach of the year in 2020.