The Astros will hold one of four regional draft workouts on Sunday, MLB.com's Brian McTaggart reports. Sunday's workout will be near Los Angeles. Others will be held in Florida, Georgia and Houston. About 20 prospects have been invited to Sunday's workout. It's unclear who they are, but some potential No. 1 overall picks are expected to participate in the workouts. Houston-area high schoolers Cavan Biggio, Josh Pettitte and Kacy Clemens -- all sons of former Astros stars -- are likely to be invited to the Houston workout. Here are more notes on the upcoming draft.
- Baseball America's list of the top 250 2013 Amateur Draft prospects is headed by Oklahoma pitcher Jonathan Gray. BA's scouting report (subscription-only) compares Gray's evolution as a prospect to that of former top overall pick Stephen Strasburg, and his stuff to that of another former top pick, Gerrit Cole. Stanford pitcher Mark Appel comes in at No. 2, followed by San Diego third baseman Kris Bryant.
- John Sickels' latest mock draft for MinorLeagueBall.com still has Appel going to the Astros, with Gray going at No. 2 to the Cubs, noting that Appel and Gray are by far the best pitchers available. Sickels' first real outside-the-box prediction is Mississippi State outfielder Hunter Renfroe heading to Miami at No. 6 -- Renfroe's stock has been rising, and Sickels guesses he might appeal to the cost-conscious Marlins.
- Appel isn't worried what fans might think of his decision to turn down the Pirates after they selected him at No. 8 overall in 2012, Chelsea Janes of USA Today sports writes. "I've always been someone that's kind of a people pleaser; I think most people are. They don't like it when people don't like them," says Appel. "I learned very quickly that it's going to be very difficult to please everyone."