Costco issued a mass refund on their four-piece Kirkland Signature golf balls after the overall durability was called into question.

Costco has sold out of its Kirkland Signature golf balls after online reviews said golfers could save $30 over Titleist brand balls, and these cheaper balls were just as good.

The warehouse retailer has filed a lawsuit against golf equipment company Acushnet for alleging that its Costco’s Kirkland Signature golf ball infringes on patents and promotes false advertising.

The staid world of golf is heating up over dimples and curves. Costco (COST) is suing golf-ball maker Titleist over the right to produce its own -- and lower-priced -- golf balls. The legal ...

The once-famous budget-friendly golf ball has been discreetly upgraded with impressive results. Here's how you spot the new version.

Costco, the warehouse retail giant, began selling golf balls last fall under its Kirkland Signature brand. The balls instantly ranked among the cheapest on the market, but by some accounts, they ...

They predictably responded with a blanket denial of all Costco's claims, but they've also volleyed back with a 284-page countersuit. About 243 pages are in-the-weeds, golf-ball science.