The Cubs officially start workouts with Pitchers and Catchers today. As you likely know, many of the Cubs top players have already been working out in Mesa at the Cubs facility. Here are some photos of those informal workouts from our John Antonoff. John has been shooting Cubs photos for Boys of Spring for many years now, he’s also doing work for the Chicago Sun Times this week. John scored a sweet cover shot (below) of Jason Heyward for the newspeaper. John does awesome work, it’s about time he starts getting some recognition! Please follow John on Twitter @baseballinfocus. Enjoy the photos!