Funny how both entries so far have had the same MISSINGLINK revealer (SLINK in that sense was new to me!). Having ONEPIN left feels like more of a "spare" thing than "strike", so maybe a clue like "Only thing left to spare?" would be more fitting (though "strike" definitely allows for a more vague/punny clue)
Thanks for solving. The "target" you want to aim for to get a strike is called the ONE PIN, so I think the clue makes sense as-written. I think the "one pin remaining" angle would make the answer a little too green-painty.