Table:
club
season
league
national cup
league cup

division
apps
goals
apps
goals
apps
goals

montreal olympique
1973
north american soccer league
19
3
-
19
3

brentford
1974-75
fourth division
3
0
-
3
0

sacramento gold
1979
american soccer league
26
14
-
26
14

california surf
1981
north american soccer league
1
0
-
1
0

career total
49
17
-
49
17

Statement: filby returned to the north american soccer league for california surf in 1981.
Question: which club did filby play for in 1981?
Answer: california surf