Reigning national champion Soumyajit Ghosh outclassed Anthony Amalraj 4-1 to retain the men's singles at the Institutional Table Tennis Championships which concluded in Dharwar today. It was a double delight for women's national champion K Shamini who won the women's singles crown 4-0 in a one-sided final against Poulomi Ghatak to pocket a prize money of Rs 58,000. Before her singles title triumph, Shamini had claimed the women's doubles title, combining with Madhurika Patkar.