- The Missing Link The resource for thoroughbred racing and handicapping software. P.O. Box 21700 San Jose, CA 95151-1700 (408) 223-7573 (voice mail) Who are we Simply speaking, The Missing Link is the source of the most widely-used thoroughbred handicapping programs in America. We have been publishing software for the serious handicapper since 1988. Chances are, unless you are an existing ...www.missinglink.com