CREATE TABLE table_name_91 (round INT, position VARCHAR, player VARCHAR)

What is the highest Round that has a Position of Tackle and the Player Fred Neilsen?
SELECT MAX(round) FROM table_name_91 WHERE position = "tackle" AND player = "fred neilsen"
SELECT MAX("round") FROM "table_name_91" WHERE "fred neilsen" = "player" AND "position" = "tackle"