Table: player_stats_13
Columns: player
nationality
jersey_number_s
position
years
from

Question: Who wears the jersey number 20 and has the position of SG?
SQL: SELECT "player" FROM player_stats_13 WHERE "position" = 'sg' AND "jersey_number_s" = '20'

Question: What nationality is the player from Oregon State?
SQL: SELECT "nationality" FROM player_stats_13 WHERE "from" = 'oregon state'

Question: What position does the player with jersey number 22 play?
SQL: SELECT "position" FROM player_stats_13 WHERE "jersey_number_s" = '22'