Mike Battaglia, who has served as Churchill Downs's morning line oddsmaker for more than five decades, will retire from the role ahead of the 44-day spring meet and be replaced by Nick Tammaro, according to a press release from the track on Friday. Battaglia was responsible for setting the odds at Churchill Downs since 1974. He also served as the track's announcer from 1977-97 and later as a simulcast host from 1997-2007. "I'm very appreciative of everyone at Churchill Downs for the opportunity over the years," Battaglia said. "It's been...