Subject = Anything To Do With Games, Sport

[heathergod]

Where a dentist might end match (6,4) - could that be hand Signal?
Best place to stand for quiet hatred (6)
Careful, with this you may get (green) ink on your tongue (7)
a form of bridge playd on boats? no actually (7)
UK gas supplier and US spies comine to throw red and blue balls (6)
Leaves nothing inside when everything's at stake (6)

[Dinkypuzzled]

form of bridge = pontoon.

[gen2]

5. BOC + CIA
Boccia is a precision ball sport, similar to bocce, and related to bowls and pétanque.

[bibblebub]

2) podium

[Fibonacci]

2. podium - p (quiet) + odium

[Salty]

6 qu(o)its