President Von der Ahe, of the St. Louis Club, was arrested May 3, at Pittsburg Pa., on a capias issued in a suit for $10,000 damages, brought by Mark Baldwin, an ex-professional pitcher, for his alleged arrest and false imprisonment in St. Louis in 1891. Von der Ahe was taken to the office of Sheriff Richards, where he gave bail in the sum of $1,000.
-New York Clipper, May 12, 1894
I had to look up the reference to "capias" and discovered that a capias warrant, according to The Law Dictionary.org, "is essentially an an order to arrest and detain an individual for the purpose of guaranteeing a court appearance." And, in this case, it appears that something like that was necessary to get Von der Ahe into court so that he could answer Baldwin's charges against him. He had used every legal trick in the book to avoid it for years at this point and I imagine that the court had had enough of his shenanigans.