Lumeta reached the finals in the warm-up contest which ended prematurely last week, but failed to reach the finals of the main event after losing to Egyptian Muhammed Fabry 3-6 7-6 10-4 in the semi-finals.
South African Calvin Jordan won gold in the event.
But, according to Lawn Tennis Association of Malawi (LTAM) chairperson Duncan Gumbi, the 13-year-old star has a chance to do better in the competitionâ€™s remaining two main events.
“It is a great achievement for him to win a bronze in the main event that attracted the best junior athletes from around the world and we are proud of that,” said Gumbi.
Lumeta qualified for the Egyptian event after winning gold in the Under-14 category of the Southern African Junior Tennis Championships in Namibia a few months ago.
He was roped into South Africaâ€™s High Performance Centre (HPC) which nurtures young sports personalities in 2009 following his outstanding display during the Under-12 Junior Circuit Championships in South Africa where he won gold.
He is expected to be groomed at the HPC, where, apart from the tennis course, he also does his secondary education.