CREATE TABLE table_78451 ("Rank" TEXT, "Games" TEXT, "Player" TEXT, "Nationality" TEXT, "Career Span" TEXT)

What is the Nationality of Mike Gatting, who played 551 games?
SELECT "Nationality" FROM table_78451 WHERE "Games" = '551' AND "Player" = 'mike gatting'
SELECT "Nationality" FROM "table_78451" WHERE "Games" = '551' AND "Player" = 'mike gatting'