thane a std x student of st john the baptist high school and junior college mark dcosta will take part in all three sprint events at mumbai zonal meet dcosta was chosen after he excelled at the districtlevel interschool athletics championship held at sports authority of india complex kandivli the mumbai divisional competition will be held from october 29 at priyadarshini park tnn he managed to clinch three silver medals in his pet events at the district meet he finished second in 100 meter 200 meter and 400 meter races to attract the attention of selectors that picked him for zonal show off he will now take part in all three sprint events at mumbai zonal meet representing thane city b b nayak