What is The lowest Points one when against 50, and got less than 20 played?
Position Team Points Played Drawn Lost Against Difference
1944 in Brazilian football
15331540
real text real real real real real text
2-15331540-1
Campeonato Paulista
Campeonato Paulista
1 Palmeiras 32 20 2 3 19 31
2 São Paulo 29 20 3 4 32 37
3 Corinthians 28 20 4 4 35 20
4 Ypiranga-SP 23 20 3 7 29 8
5 São Paulo Railway 21 20 3 8 48 - 7
6 Santos 20 20 4 8 41 - 2
7 Juventus 18 20 4 9 49 - 10
8 Comercial-SP 18 20 2 10 57 - 15
9 Portuguesa 12 20 6 11 47 - 18
10 Jabaquara 10 20 0 15 50 - 12
11 Portuguesa Santista 9 20 3 14 69 - 32
SELECT MIN Points FROM table WHERE Against = 50 AND Played < 20
50 20