CREATE TABLE table_19751479_4 (fastest_lap VARCHAR, rnd VARCHAR, pole_position VARCHAR)

How many races had #99 gainsco/bob stallings racing in round 10?
SELECT COUNT(fastest_lap) FROM table_19751479_4 WHERE rnd = 10 AND pole_position = "#99 GAINSCO/Bob Stallings Racing"
SELECT COUNT("fastest_lap") FROM "table_19751479_4" WHERE "#99 GAINSCO/Bob Stallings Racing" = "pole_position" AND "rnd" = 10