With the second off day coming up Wednesday, the Pirates are at the unofficial halfway points of the Grapefruit League schedule and Thursday will mark 2 weeks until Opening Day in St. Petersburg.  So I figured this was a good time get a progress report from Derek Shelton. Among the topics: how he's adjusting to being a manager, getting as much input from as many people as he can -his coaches, opposing managers, the analytics people, and his players (which is something a little different for them), how Oscar Marin's pitching program is being received, which players has impressed him the most (it's an important one) and I even learned a new term - "informatics."