user: ### NOW ANSWER:
Question: What is the highest SHTS of Kasey Keller
Columns: ['Rank', 'Goalkeeper', 'Club', 'MINS', 'SHTS', 'W–L–T']
Types: ['real', 'text', 'text', 'real', 'real', 'text']
Sample row: [1.0, 'Zach Thornton', 'Chivas USA', 2385.0, 111.0, '12–9–6']
SQL:

assistant: SELECT MAX("SHTS") FROM "Table" WHERE "Goalkeeper" = 'Kasey Keller';