TORONTO - Former Blue Jay Buck Martinez is back in Toronto to call play-by-play on Toronto Blue Jays broadcasts for Rogers Sportsnet.Martinez, a catcher who played six seasons with the Toronto squad, is the new voice on Jays on Rogers Sportsnet, replacing Jamie Campbell.His prior work includes analysis on Jays television broadcasts (1987-2000) and national broadcasts for Telemedia Radio Network in Canada (1984-1987). He also covered the All-Star Game, playoffs and World Series for Telemedia. Most recently, he was a member of the Baltimore Orioles TV broadcast team.www.sportsnet.ca