Schneider, also known as “Kiki”, had been battling abdominal cancer.
Those involved in a fundraising effort to support his treatment included
Italian World No. 197 Thomas Fabbiano and Gilles Cervara, coach of World No. 2 Daniil Medvedev.
Another Croatian, WTA star Ana Konjuh, paid tribute to Schneider on Instagram.
“I’m lost for words. Until we meet again, save me a hug up there. Rest in peace Kiki."