Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_95 (round INTEGER, pick VARCHAR, position VARCHAR, name VARCHAR)
### Question:
What is the total round when DB was the position, and the pick less than 21, and Jeff Welch as the name?
### Answer:
SELECT SUM(round) FROM table_name_95 WHERE position = "db" AND name = "jeff welch" AND pick < 21