By Ken Rosenthal and Jon Paul Morosi
FOXSports.com
ORLANDO -- The Blue Jays, who are deep in high-end pitching prospects, have expressed strong interest in trading for Diamondbacks right fielder Justin Upton, major league sources say.
The Jays, after winning 85 games and finishing fourth in the highly competitive AL East last season, are showing a renewed aggressiveness this offseason.
Upton, 23, would be a more logical fit than second baseman Dan Uggla, whom the Jays tried to acquire from the Marlins earlier in the week.
While Uggla stood to earn $10 million-plus in arbitration and then become a free agent, Upton is under contract through 2015 and guaranteed $49.5 million over those five seasons.
The Red Sox, thought to be a possible front-runner in the Upton trade discussions, are now on the
