Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_72 (react INTEGER, time VARCHAR, athlete VARCHAR)
### Question:
What is Christian Malcolm´s highest react when his time was below 20.58?
### Answer:
SELECT MAX(react) FROM table_name_72 WHERE time < 20.58 AND athlete = "christian malcolm"