Woolwell Table tennis club members Bella Payn, her brother Josh, Beth Wilson and Ollie Buddell qualified for the national finals next month.
The youngsters had to take on opponents from around the South West, including some from as far afield as Bournemouth and Gloucester.
The English Table Tennis Association's South West Regional qualification tournament involved boys and girls in the junior under-18 category and cadet under-15 category.
In the cadet girls' event Bella Payn from Plymouth qualified in first position and brother Josh qualified fourth in the cadet boys' competition. In the junior girls' event, Wilson from Saltash put in a great performance to win the tournament.
The junior boys' event proved to be a highly contested category with the largest entry.
In many cases, the group matches came down to the wire with a few players beating each other and having to rely on sets countback to go forward to the latter rounds.
Edward Haskell from Okehampton came a creditable fourth and took the final qualification spot, while Plymouth's Jordan Bone played well to come sixth in the tournament and become second reserve for the regional selection.
Plymouth's Ollie Buddell put in some outstanding performances to win the whole event without losing a match. He beat all of the top five players to take first position and seal automatic selection to the national finals.