CREATE TABLE table_name_43 (gain INT, avg_g VARCHAR, loss VARCHAR)

What are the gains for the player with average of 26.8 and lost yard fewer than 13?
SELECT SUM(gain) FROM table_name_43 WHERE avg_g = "26.8" AND loss < 13
SELECT SUM("gain") FROM "table_name_43" WHERE "26.8" = "avg_g" AND "loss" < 13