Michael Wrona, widely considered one of the premier announcers in the country, won't be calling races at Lone Star Park this year. He and Lone Star were unable to agree on a contract.Wrona said he was offered a "huge reduction" in salary that "was simply unfeasible." A native of Australia with a distinctive style, Wrona came to Lone Star five years ago from Hollywood Park in California.Wrona, 38, said he has no definite plans.In describing Wrona as "one of the best," Lone Star general manager Jeff Greco said: "We were unable to mutually agree on contract terms."Greco said the track has narrowed down its search for a replacement to a short list of candidates. Lone Star, owned by Magna Entertainment Corp., begins its Thoroughbred season April 14.