Python 3.4.2 How to insert data into a specific row in a sqlite database?

I have a table containing the name, score 1, score 2, and score 3 of a player. There are multiple data entries and I would like to know how to add the player's score to their correct row, i.e.:

Name, Score 1, Score 2, Score 3
John,      12,    ____,    ____

How would I specify what row to insert the player's score 2 into when using

.execute('''INSERT INTO ScoresTable (name, score 1, score 2, score 3)''')

Do I use the row index but how would I implement that into the code?