He’s a legend on the baseball diamond.

But Tony La Russa is not inspiring any awe at Twitter, the red-hot microblogging service that La Russa sued last month.

Twitter co-founder Biz Stone called the suit — which relates to a Twitter user impersonating the famed St. Louis Cardinals manager — an “unnecessary waste of judicial resources bordering on frivolous,” in a blog post on the company Web site on Saturday titled “Not playing ball.”

Stone said reports that Twitter has settled the suit and agreed to pay La Russa’s legal fees are “erroneous,” noting that Twitter’s policy is to suspend, delete or transfer control of false accounts and that its staff acted in accordance with the policy when it was notified about the La Russa situation.

“Twitter has not settled, nor do we plan to settle or pay,” Stone said.

But if Twitter won’t pay La Russa, it is acting to prevent similar situations and lawsuits.