Thursday Morning Riddle

I’m a ball hit by Tiger, but also by Ashe;
I am genius or luck when it’s merely a dash;
When a swimmer or rower propels with a splash;
Or an illness from heat, with exhaustion or rash.

I’m the move when you pensively rub your mustache;
I’m a blood-starved infarction; a lightning bolt flash;
I’m to flatter an ego; calligraphy slash;
And one pass when applying mascara to lash.

Who am I?

UPDATE: Riddle solved by Asher. See comments for answer.

2 Responses to “Thursday Morning Riddle”

  1. Asher Says:

    Stroke

  2. Bill Says:

    STROKE is correct. Way to go, Asher!

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