The World Table Tennis Championships are slated for April 28 to May 5 in Tokyo, Japan.
Ajayi, who discovered Oribamise at the age of seven, said in Lagos that the talented player should not relent on her oars.
“I am happy that I discovered her in Ekiti State and now she is representing the country in international tournaments.
“I am also elated because she is contending with her senior counterparts which are a good sign that she is truly blessed and talented.
“Tosin should be disciplined because discipline leads to stardom, the sky will be the beginning for her if she is well disciplined.
“I know that she is hardworking but she should not relent in her efforts. She should have it in mind that she wants to be Africa and World best in any category,” he said.
Ajayi also warned her to be cautious of vices that could jeopardise her career and reputation.
He advised the Team Nigerian to make the country proud at the tournament in Tokyo.
Ajayi also commended EnitanOshodi, the President, Nigeria Table Tennis Federation (NTTF), for revamping the sport and exposing young players to international events.
Oribamise, 12, is among the 10-man team listed by NTTF for the competition.
Others are FunkeOshonaike, EdemOffiong, Cecilia Akpan-Otu and GaniatOlatunde-Aruna in the women category.
SegunToriola, ArunaQuadri, SeunAjetunmobi, OjoOnaolapo and KazeemMakanjuola are in the men’s team.