Mary will be a hard nut to crack: coach Ajit Kumar Singh

"I had been with her for over a month at a camp held in Patiala, where the 29-year-old Manipuri boxer was undergoing training for London Games in February-March last, and I know she will not accept defeat till the last moment irrespective of how strong her rival be," Singh, a former National Games champion in lightweight (60 kgs) category, said.

Apart from her flawless technique, excellent footwork and powerful punches, the most needed quality Mary has is her temperament, which has helped her to rise continuously, Singh, who had won gold medal in 1994 Pune National Games, told PTI.

"It was her confidence and temperament that led her win a silver medal at the 2008 Asian Women's Boxing Championship held in Guwahati, where she participated after two-year break from boxing, and a fourth successive Women's World Boxing Championship in China one and half month later, he said.